diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/about-compat/aboutPage.js b/components/feature/webcompat/src/main/assets/extensions/webcompat/about-compat/aboutPage.js
index e7195513321..97d6302543a 100644
--- a/components/feature/webcompat/src/main/assets/extensions/webcompat/about-compat/aboutPage.js
+++ b/components/feature/webcompat/src/main/assets/extensions/webcompat/about-compat/aboutPage.js
@@ -4,13 +4,9 @@
 
 "use strict";
 
-/* global ExtensionAPI, Services, XPCOMUtils */
+/* global ExtensionAPI, XPCOMUtils */
 
-ChromeUtils.defineModuleGetter(
-  this,
-  "Services",
-  "resource://gre/modules/Services.jsm"
-);
+const { Services } = ChromeUtils.import("resource://gre/modules/Services.jsm");
 
 XPCOMUtils.defineLazyServiceGetter(
   this,
diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/data/injections.js b/components/feature/webcompat/src/main/assets/extensions/webcompat/data/injections.js
index 52049ac9fac..ac1f19b3627 100644
--- a/components/feature/webcompat/src/main/assets/extensions/webcompat/data/injections.js
+++ b/components/feature/webcompat/src/main/assets/extensions/webcompat/data/injections.js
@@ -359,20 +359,6 @@ const AVAILABLE_INJECTIONS = [
       allFrames: true,
     },
   },
-  {
-    id: "bug1711082",
-    platform: "all",
-    domain: "m.aliexpress.com",
-    bug: "1711082",
-    contentScripts: {
-      matches: ["*://m.aliexpress.com/*"],
-      js: [
-        {
-          file: "injections/js/bug1711082-m.aliexpress.com-undisable-search.js",
-        },
-      ],
-    },
-  },
   {
     id: "bug1712833",
     platform: "all",
@@ -507,27 +493,18 @@ const AVAILABLE_INJECTIONS = [
       ],
     },
   },
-  {
-    id: "bug1756692",
-    platform: "android",
-    domain: "zee5.com",
-    bug: "1756692",
-    contentScripts: {
-      matches: ["*://www.zee5.com/*"],
-      js: [
-        {
-          file: "injections/js/bug1756692-effectiveType-shim.js",
-        },
-      ],
-    },
-  },
   {
     id: "bug1739489",
     platform: "desktop",
-    domain: "draft.js",
+    domain: "Sites using draft.js",
     bug: "1739489",
     contentScripts: {
-      matches: ["*://draftjs.org/*", "*://www.facebook.com/*"],
+      matches: [
+        "*://draftjs.org/*", // Bug 1739489
+        "*://www.facebook.com/*", // Bug 1739489
+        "*://twitter.com/*", // Bug 1776229
+        "*://mobile.twitter.com/*", // Bug 1776229
+      ],
       js: [
         {
           file: "injections/js/bug1739489-draftjs-beforeinput.js",
@@ -578,6 +555,36 @@ const AVAILABLE_INJECTIONS = [
       ],
     },
   },
+  {
+    id: "bug1774490",
+    platform: "all",
+    domain: "rainews.it",
+    bug: "1774490",
+    contentScripts: {
+      matches: ["*://www.rainews.it/*"],
+      css: [
+        {
+          file: "injections/css/bug1774490-rainews.it-gallery-fix.css",
+        },
+      ],
+    },
+  },
+  {
+    id: "bug1774005",
+    platform: "all",
+    domain: "Sites relying on window.InstallTrigger",
+    bug: "1774005",
+    contentScripts: {
+      matches: [
+        "*://*.pixiv.net/*", // Bug 1774006
+      ],
+      js: [
+        {
+          file: "injections/js/bug1774005-installtrigger-shim.js",
+        },
+      ],
+    },
+  },
 ];
 
 module.exports = AVAILABLE_INJECTIONS;
diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/data/shims.js b/components/feature/webcompat/src/main/assets/extensions/webcompat/data/shims.js
index 321bbfade22..c0f071fd541 100644
--- a/components/feature/webcompat/src/main/assets/extensions/webcompat/data/shims.js
+++ b/components/feature/webcompat/src/main/assets/extensions/webcompat/data/shims.js
@@ -148,6 +148,25 @@ const AVAILABLE_SHIMS = [
     ],
     onlyIfBlockedByETP: true,
   },
+  {
+    id: "AdSafeProtectedFavIcon",
+    platform: "all",
+    name: "Ad Safe Protected favicon",
+    bug: "1717806",
+    matches: [
+      {
+        patterns: ["*://static.adsafeprotected.com/favicon.ico"],
+        target: "https://redirect.firefox.etp/adsafeprotected_favicon",
+        types: ["image", "imageset", "xmlhttprequest"],
+      },
+      {
+        patterns: ["https://redirect.firefox.etp/adsafeprotected_favicon"],
+        target: "tracking-pixel.png",
+        types: ["image", "imageset", "xmlhttprequest"],
+      },
+    ],
+    onlyIfBlockedByETP: true,
+  },
   {
     id: "AdSafeProtectedGoogleIMAAdapter",
     platform: "all",
@@ -164,7 +183,35 @@ const AVAILABLE_SHIMS = [
     name: "Ads by Google",
     bug: "1713726",
     file: "google-ads.js",
-    matches: ["*://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"],
+    matches: [
+      "*://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js",
+      {
+        patterns: [
+          "*://pagead2.googlesyndication.com/pagead/*.js*fcd=true",
+          "*://pagead2.googlesyndication.com/pagead/js/*.js*fcd=true",
+        ],
+        target: "empty-script.js",
+        types: ["xmlhttprequest"],
+      },
+    ],
+    onlyIfBlockedByETP: true,
+  },
+  {
+    id: "Branch",
+    platform: "all",
+    name: "Branch Web SDK",
+    bug: "1716220",
+    file: "branch.js",
+    matches: ["*://cdn.branch.io/branch-latest.min.js*"],
+    onlyIfBlockedByETP: true,
+  },
+  {
+    id: "DoubleVerify",
+    platform: "all",
+    name: "DoubleVerify",
+    bug: "1771557",
+    file: "doubleverify.js",
+    matches: ["*://pub.doubleverify.com/signals/pub.js*"],
     onlyIfBlockedByETP: true,
   },
   {
@@ -247,6 +294,19 @@ const AVAILABLE_SHIMS = [
     ],
     onlyIfBlockedByETP: true,
   },
+  {
+    id: "PBMWebAPIFixes",
+    platform: "all",
+    name: "Private Browsing Web APIs",
+    bug: "1773110",
+    runFirst: "private-browsing-web-api-fixes.js",
+    matches: [
+      "*://*.imgur.com/js/vendor.*.bundle.js",
+      "*://*.imgur.io/js/vendor.*.bundle.js",
+      "*://www.rva311.com/static/js/main.*.chunk.js",
+    ],
+    onlyIfPrivateBrowsing: true,
+  },
   {
     id: "Eluminate",
     platform: "all",
@@ -391,6 +451,15 @@ const AVAILABLE_SHIMS = [
       },
     ],
   },
+  {
+    id: "IAM",
+    platform: "all",
+    name: "INFOnline IAM",
+    bug: "1761774",
+    file: "iam.js",
+    matches: ["*://script.ioam.de/iam.js"],
+    onlyIfBlockedByETP: true,
+  },
   {
     id: "IASPET",
     platform: "all",
@@ -426,13 +495,25 @@ const AVAILABLE_SHIMS = [
     ],
     onlyIfBlockedByETP: true,
   },
+  {
+    id: "Nielsen",
+    platform: "all",
+    name: "Nielsen",
+    bug: "1760754",
+    file: "nielsen.js",
+    matches: ["*://*.imrworldwide.com/v60.js"],
+    onlyIfBlockedByETP: true,
+  },
   {
     id: "Optimizely",
     platform: "all",
     name: "Optimizely",
     bug: "1714431",
     file: "optimizely.js",
-    matches: ["*://cdn.optimizely.com/js/*.js"],
+    matches: [
+      "*://cdn.optimizely.com/js/*.js",
+      "*://cdn.optimizely.com/public/*.js",
+    ],
     onlyIfBlockedByETP: true,
   },
   {
@@ -454,6 +535,19 @@ const AVAILABLE_SHIMS = [
     matches: ["*://media.richrelevance.com/rrserver/js/1.2/p13n.js"],
     onlyIfBlockedByETP: true,
   },
+  {
+    id: "Firebase",
+    platform: "all",
+    name: "Firebase",
+    bug: "1668408",
+    onlyIfPrivateBrowsing: true,
+    runFirst: "firebase.js",
+    matches: [
+      "*://www.gstatic.com/firebasejs/*/firebase-messaging.js*",
+      "*://orangerie.eu/js/vendor*.js*",
+      "*://web.whatsapp.com/vendor*bootstrap_qr*.js*",
+    ],
+  },
   {
     id: "StackBlitz",
     platform: "all",
@@ -469,6 +563,28 @@ const AVAILABLE_SHIMS = [
       },
     ],
   },
+  {
+    id: "StickyAdsTV",
+    platform: "all",
+    name: "StickyAdsTV",
+    bug: "1717806",
+    matches: [
+      {
+        patterns: [
+          "*://ads.stickyadstv.com/auto-user-sync*",
+          "*://ads.stickyadstv.com/user-matching*",
+        ],
+        target: "https://redirect.firefox.etp/stickadstv",
+        types: ["image", "imageset", "xmlhttprequest"],
+      },
+      {
+        patterns: ["https://redirect.firefox.etp/stickadstv"],
+        target: "tracking-pixel.png",
+        types: ["image", "imageset", "xmlhttprequest"],
+      },
+    ],
+    onlyIfBlockedByETP: true,
+  },
   {
     id: "Vidible",
     branch: ["nightly"],
diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/data/ua_overrides.js b/components/feature/webcompat/src/main/assets/extensions/webcompat/data/ua_overrides.js
index c5614c5556d..8d1ae487d95 100644
--- a/components/feature/webcompat/src/main/assets/extensions/webcompat/data/ua_overrides.js
+++ b/components/feature/webcompat/src/main/assets/extensions/webcompat/data/ua_overrides.js
@@ -716,6 +716,7 @@ const AVAILABLE_UA_OVERRIDES = [
       matches: [
         "*://*.commerzbank.de/*", // Bug 1767630
         "*://*.edf.com/*", // Bug 1764786
+        "*://*.ibmserviceengage.com/*", // #105438
         "*://*.wordpress.org/*", // Bug 1743431
         "*://as.eservice.asus.com/*", // #104113
         "*://bethesda.net/*", // #94607,
@@ -726,6 +727,7 @@ const AVAILABLE_UA_OVERRIDES = [
         "*://mon.allianzbanque.fr/*", // #101074
         "*://online.citi.com/*", // #101268
         "*://simperium.com/*", // #98934
+        "*://survey.sogosurvey.com/*", // Bug 1765925
         "*://ubank.com.au/*", // #104099
         "*://wifi.sncf/*", // #100194
         "*://www.accringtonobserver.co.uk/*", // Bug 1762928 (Reach Plc)
@@ -789,6 +791,7 @@ const AVAILABLE_UA_OVERRIDES = [
         "*://www.leeds-live.co.uk/*", // Bug 1762928 (Reach Plc)
         "*://www.leicestermercury.co.uk/*", // Bug 1762928 (Reach Plc)
         "*://www.lincolnshirelive.co.uk/*", // Bug 1762928 (Reach Plc)
+        "*://www.liveobserverpark.com/*", // #105244
         "*://www.liverpool.com/*", // Bug 1762928 (Reach Plc)
         "*://www.liverpoolecho.co.uk/*", // Bug 1762928 (Reach Plc)
         "*://www.loughboroughecho.net/*", // Bug 1762928 (Reach Plc)
@@ -811,7 +814,6 @@ const AVAILABLE_UA_OVERRIDES = [
         "*://www.southportvisiter.co.uk/*", // Bug 1762928 (Reach Plc)
         "*://www.staffordshire-live.co.uk/*", // Bug 1762928 (Reach Plc)
         "*://www.stokesentinel.co.uk/*", // Bug 1762928 (Reach Plc)
-        "*://survey.sogosurvey.com/*", // Bug 1765925
         "*://www.sussexlive.co.uk/*", // Bug 1762928 (Reach Plc)
         "*://www.tm-awx.com/*", // Bug 1762928 (Reach Plc)
         "*://www.walesonline.co.uk/*", // Bug 1762928 (Reach Plc)
diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/injections/css/bug1774490-rainews.it-gallery-fix.css b/components/feature/webcompat/src/main/assets/extensions/webcompat/injections/css/bug1774490-rainews.it-gallery-fix.css
new file mode 100644
index 00000000000..95dbf219c94
--- /dev/null
+++ b/components/feature/webcompat/src/main/assets/extensions/webcompat/injections/css/bug1774490-rainews.it-gallery-fix.css
@@ -0,0 +1,9 @@
+/**
+ * rainews.it - Image slideshow is not shown
+ * Bug #1774490 - https://bugzilla.mozilla.org/show_bug.cgi?id=1774490
+ * WebCompat issue #105402 - https://webcompat.com/issues/105402
+ */
+
+.photogallery-swiper .swiper-slide {
+  height: auto;
+}
diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/injections/js/bug1711082-m.aliexpress.com-undisable-search.js b/components/feature/webcompat/src/main/assets/extensions/webcompat/injections/js/bug1711082-m.aliexpress.com-undisable-search.js
deleted file mode 100644
index 1fc0b3acaf3..00000000000
--- a/components/feature/webcompat/src/main/assets/extensions/webcompat/injections/js/bug1711082-m.aliexpress.com-undisable-search.js
+++ /dev/null
@@ -1,34 +0,0 @@
-"use strict";
-
-/**
- * Bug 1711082 - Cannot trigger search bar on AliExpress mobile page
- *
- * This patch ensures that the search input never has the [disabled]
- * attribute, so that users may tap/click on it to search.
- *
- * See https://bugzilla.mozilla.org/show_bug.cgi?id=1711082 for details.
- */
-
-const SELECTOR = `[data-spm="header"] input[disabled]`;
-
-function check(target) {
-  if (target.nodeName === "INPUT" && target.matches(SELECTOR)) {
-    target.removeAttribute("disabled");
-    return true;
-  }
-  return false;
-}
-
-new MutationObserver(mutations => {
-  for (const { addedNodes, target, attributeName } of mutations) {
-    if (attributeName === "disabled") {
-      check(target);
-    } else {
-      addedNodes?.forEach(node => {
-        if (!check(node)) {
-          node.querySelector?.(SELECTOR)?.removeAttribute("disabled");
-        }
-      });
-    }
-  }
-}).observe(document, { attributes: true, childList: true, subtree: true });
diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/injections/js/bug1756692-effectiveType-shim.js b/components/feature/webcompat/src/main/assets/extensions/webcompat/injections/js/bug1756692-effectiveType-shim.js
deleted file mode 100644
index d12be6305c7..00000000000
--- a/components/feature/webcompat/src/main/assets/extensions/webcompat/injections/js/bug1756692-effectiveType-shim.js
+++ /dev/null
@@ -1,23 +0,0 @@
-"use strict";
-
-/**
- * Bug 1756692 - Issues due to missing navigator.connection after
- * https://bugzilla.mozilla.org/show_bug.cgi?id=1637922 landed.
- * Webcompat issue #99671 - https://github.com/webcompat/web-bugs/issues/99671
- */
-
-/* globals cloneInto, exportFunction */
-
-console.info(
-  "navigator.connection has been shimmed for compatibility reasons. See https://bugzilla.mozilla.org/show_bug.cgi?id=1756692 for details."
-);
-
-var connection = {
-  addEventListener: () => {},
-  removeEventListener: () => {},
-  effectiveType: "4g",
-};
-
-window.navigator.wrappedJSObject.connection = cloneInto(connection, window, {
-  cloneFunctions: true,
-});
diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/injections/js/bug1774005-installtrigger-shim.js b/components/feature/webcompat/src/main/assets/extensions/webcompat/injections/js/bug1774005-installtrigger-shim.js
new file mode 100644
index 00000000000..750a72d051a
--- /dev/null
+++ b/components/feature/webcompat/src/main/assets/extensions/webcompat/injections/js/bug1774005-installtrigger-shim.js
@@ -0,0 +1,22 @@
+"use strict";
+
+/**
+ * Bug 1774005 - Generic window.InstallTrigger shim
+ *
+ * This interventions shims window.InstallTrigger to a string, which evaluates
+ * as `true` in web developers browser sniffing code. This intervention will
+ * be applied to multiple domains, see bug 1774005 for more information.
+ */
+
+/* globals exportFunction */
+
+console.info(
+  "The InstallTrigger has been shimmed for compatibility reasons. See https://bugzilla.mozilla.org/show_bug.cgi?id=1774005 for details."
+);
+
+Object.defineProperty(window.wrappedJSObject, "InstallTrigger", {
+  get: exportFunction(function() {
+    return "This property has been shimed for Web Compatibility reasons.";
+  }, window),
+  set: exportFunction(function(_) {}, window),
+});
diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/lib/shims.js b/components/feature/webcompat/src/main/assets/extensions/webcompat/lib/shims.js
index a129bb752ba..d0979576c4f 100644
--- a/components/feature/webcompat/src/main/assets/extensions/webcompat/lib/shims.js
+++ b/components/feature/webcompat/src/main/assets/extensions/webcompat/lib/shims.js
@@ -53,9 +53,11 @@ class Shim {
     this.notHosts = opts.notHosts;
     this.onlyIfBlockedByETP = opts.onlyIfBlockedByETP;
     this.onlyIfDFPIActive = opts.onlyIfDFPIActive;
+    this.onlyIfPrivateBrowsing = opts.onlyIfPrivateBrowsing;
     this._options = opts.options || {};
     this.needsShimHelpers = opts.needsShimHelpers;
     this.platform = opts.platform || "all";
+    this.runFirst = opts.runFirst;
     this.unblocksOnOptIn = unblocksOnOptIn;
     this.requestStorageAccessForRedirect = opts.requestStorageAccessForRedirect;
 
@@ -519,7 +521,7 @@ class Shims {
           if (shim.isGoogleTrendsDFPIFix) {
             addTypePatterns(type, patterns, allHeaderChangingMatchTypePatterns);
           }
-          if (target || shim.file) {
+          if (target || shim.file || shim.runFirst) {
             addTypePatterns(type, patterns, allMatchTypePatterns);
           }
         }
@@ -909,13 +911,19 @@ class Shims {
     for (const shim of this.shims.values()) {
       await shim.ready;
 
-      if (!shim.enabled || !shim.redirectsRequests) {
+      if (!shim.enabled || (!shim.redirectsRequests && !shim.runFirst)) {
         continue;
       }
 
-      if (shim.onlyIfDFPIActive) {
+      if (shim.onlyIfDFPIActive || shim.onlyIfPrivateBrowsing) {
         const isPB = (await browser.tabs.get(details.tabId)).incognito;
-        if (!(await browser.trackingProtection.isDFPIActive(isPB))) {
+        if (!isPB && shim.onlyIfPrivateBrowsing) {
+          continue;
+        }
+        if (
+          shim.onlyIfDFPIActive &&
+          !(await browser.trackingProtection.isDFPIActive(isPB))
+        ) {
           continue;
         }
       }
@@ -947,6 +955,8 @@ class Shims {
       }
     }
 
+    let runFirst = false;
+
     if (shimToApply) {
       // Note that sites may request the same shim twice, but because the requests
       // may differ enough for some to fail (CSP/CORS/etc), we always let the request
@@ -954,18 +964,32 @@ class Shims {
 
       const { target } = match;
       const { bug, file, id, name, needsShimHelpers } = shimToApply;
+      runFirst = shimToApply.runFirst;
 
       const redirect = target || file;
 
       warn(
-        `Shimming tracking ${type} ${url} on tab ${tabId} frame ${frameId} with ${redirect}`
+        `Shimming tracking ${type} ${url} on tab ${tabId} frame ${frameId} with ${redirect ||
+          runFirst}`
       );
 
       const warning = `${name} is being shimmed by Firefox. See https://bugzilla.mozilla.org/show_bug.cgi?id=${bug} for details.`;
 
-      try {
-        // For scripts, we also set up any needed shim helpers.
-        if (type === "script" && needsShimHelpers?.length) {
+      let needConsoleMessage = true;
+
+      if (runFirst) {
+        try {
+          await browser.tabs.executeScript(tabId, {
+            file: `/shims/${runFirst}`,
+            frameId,
+            runAt: "document_start",
+          });
+        } catch (_) {}
+      }
+
+      // For scripts, we also set up any needed shim helpers.
+      if (type === "script" && needsShimHelpers?.length) {
+        try {
           await browser.tabs.executeScript(tabId, {
             file: "/lib/shim_messaging_helper.js",
             frameId,
@@ -977,14 +1001,23 @@ class Shims {
             { origin, shimId: id, needsShimHelpers, warning },
             { frameId }
           );
+          needConsoleMessage = false;
           shimToApply.setActiveOnTab(tabId);
-        } else {
+        } catch (_) {}
+      }
+
+      if (needConsoleMessage) {
+        try {
           await browser.tabs.executeScript(tabId, {
             code: `console.warn(${JSON.stringify(warning)})`,
             runAt: "document_start",
           });
-        }
-      } catch (_) {}
+        } catch (_) {}
+      }
+
+      if (!redirect.indexOf("http://") || !redirect.indexOf("https://")) {
+        return { redirectUrl: redirect };
+      }
 
       // If any shims matched the request to replace it, then redirect to the local
       // file bundled with SmartBlock, so the request never hits the network.
@@ -998,7 +1031,9 @@ class Shims {
       return { cancel: true };
     }
 
-    debug(`ignoring ${url} on tab ${tabId} frame ${frameId}`);
+    if (!runFirst) {
+      debug(`ignoring ${url} on tab ${tabId} frame ${frameId}`);
+    }
     return undefined;
   }
 }
diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/manifest.json b/components/feature/webcompat/src/main/assets/extensions/webcompat/manifest.json
index 7a06c0bebd4..7906d11afdd 100644
--- a/components/feature/webcompat/src/main/assets/extensions/webcompat/manifest.json
+++ b/components/feature/webcompat/src/main/assets/extensions/webcompat/manifest.json
@@ -2,7 +2,7 @@
   "manifest_version": 2,
   "name": "Mozilla Android Components - Web Compatibility Interventions",
   "description": "Urgent post-release fixes for web compatibility.",
-  "version": "102.0.0",
+  "version": "103.0.0",
   "applications": {
     "gecko": {
       "id": "webcompat@mozilla.org",
@@ -98,15 +98,18 @@
     "shims/adsafeprotected-ima.js",
     "shims/apstag.js",
     "shims/bmauth.js",
+    "shims/branch.js",
     "shims/chartbeat.js",
     "shims/crave-ca.js",
     "shims/criteo.js",
     "shims/cxense.js",
+    "shims/doubleverify.js",
     "shims/eluminate.js",
     "shims/empty-script.js",
     "shims/empty-shim.txt",
     "shims/facebook-sdk.js",
     "shims/facebook.svg",
+    "shims/firebase.js",
     "shims/google-ads.js",
     "shims/google-analytics-and-tag-manager.js",
     "shims/google-analytics-ecommerce-plugin.js",
@@ -118,6 +121,7 @@
     "shims/hamropatro.js",
     "shims/history.js",
     "shims/humblebundle.js",
+    "shims/iam.js",
     "shims/iaspet.js",
     "shims/kinja.js",
     "shims/live-test-shim.js",
@@ -127,8 +131,10 @@
     "shims/mochitest-shim-1.js",
     "shims/mochitest-shim-2.js",
     "shims/mochitest-shim-3.js",
+    "shims/nielsen.js",
     "shims/optimizely.js",
     "shims/play.svg",
+    "shims/private-browsing-web-api-fixes.js",
     "shims/rambler-authenticator.js",
     "shims/rich-relevance.js",
     "shims/stackblitz.js",
diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/apstag.js b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/apstag.js
index 5cc00a7e015..7232d3f68c2 100644
--- a/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/apstag.js
+++ b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/apstag.js
@@ -36,7 +36,9 @@ if (!window.apstag?._getSlotIdToNameMapping) {
       if (!Array.isArray(cfg?.slots)) {
         return;
       }
-      cb(cfg.slots.map(s => newBid(s)));
+      setTimeout(() => {
+        cb(cfg.slots.map(s => newBid(s)));
+      }, 1);
     },
     init() {},
     punt() {},
diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/branch.js b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/branch.js
new file mode 100644
index 00000000000..404ab78a8f3
--- /dev/null
+++ b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/branch.js
@@ -0,0 +1,81 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Bug 1716220 - Shim Branch Web SDK
+ *
+ * Sites such as TataPlay may not load properly if Branch Web SDK is
+ * blocked. This shim stubs out its script so the page still loads.
+ */
+
+if (!window?.branch?.b) {
+  const queue = window?.branch?._q || [];
+  window.branch = new (class {
+    V = {};
+    g = 0;
+    X = "web2.62.0";
+    b = {
+      A: {},
+      clear() {},
+      get() {},
+      getAll() {},
+      isEnabled: () => true,
+      remove() {},
+      set() {},
+      ca() {},
+      g: [],
+      l: 0,
+      o: 0,
+      s: null,
+    };
+    addListener() {}
+    applyCode() {}
+    autoAppIndex() {}
+    banner() {}
+    c() {}
+    closeBanner() {}
+    closeJourney() {}
+    constructor() {}
+    creditHistory() {}
+    credits() {}
+    crossPlatformIds() {}
+    data() {}
+    deepview() {}
+    deepviewCta() {}
+    disableTracking() {}
+    first() {}
+    getBrowserFingerprintId() {}
+    getCode() {}
+    init(key, cb) {
+      cb?.(undefined, {});
+    }
+    lastAttributedTouchData() {}
+    link() {}
+    logEvent() {}
+    logout() {}
+    qrCode() {}
+    redeem() {}
+    referrals() {}
+    removeListener() {}
+    renderFinalize() {}
+    renderQueue() {}
+    sendSMS() {}
+    setAPIResponseCallback() {}
+    setBranchViewData() {}
+    setIdentity() {}
+    track() {}
+    trackCommerceEvent() {}
+    validateCode() {}
+  })();
+  const push = (fn, args) => {
+    try {
+      window.branch[fn].apply(window.branch, args);
+    } catch (e) {
+      console.error(e);
+    }
+  };
+  queue.forEach(push);
+}
diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/doubleverify.js b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/doubleverify.js
new file mode 100644
index 00000000000..7f9ff42dce0
--- /dev/null
+++ b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/doubleverify.js
@@ -0,0 +1,36 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Bug 1771557 - Shim DoubleVerify analytics
+ *
+ * Some sites such as Sports Illustrated expect DoubleVerify's
+ * analytics script to load, otherwise odd breakage may occur.
+ * This shim helps mitigate such breakage.
+ */
+
+if (!window?.PQ?.loaded) {
+  const cmd = [];
+  cmd.push = function(c) {
+    try {
+      c?.();
+    } catch (_) {}
+  };
+
+  window.apntag = {
+    anq: [],
+  };
+
+  window.PQ = {
+    cmd,
+    loaded: true,
+    getTargeting: (_, cb) => cb?.([]),
+    init: () => {},
+    loadSignals: (_, cb) => cb?.(),
+    loadSignalsForSlots: (_, cb) => cb?.(),
+    PTS: {},
+  };
+}
diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/eluminate.js b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/eluminate.js
index 37566ff9fd5..3fa65c048c2 100644
--- a/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/eluminate.js
+++ b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/eluminate.js
@@ -59,4 +59,37 @@ if (!window.CM_DDX) {
   w.cmSetupNormalization = noopfn;
   w.cmSetupOther = noopfn;
   w.cmStartTagSet = noopfn;
+  w.cmCreateConversionEventTag = noopfn;
+  w.cmCreateDefaultPageviewTag = noopfn;
+  w.cmCreateElementTag = noopfn;
+  w.cmCreateManualImpressionTag = noopfn;
+  w.cmCreateManualLinkClickTag = noopfn;
+  w.cmCreateManualPageviewTag = noopfn;
+  w.cmCreatePageElementTag = noopfn;
+  w.cmCreatePageviewTag = noopfn;
+  w.cmCreateProductElementTag = noopfn;
+  w.cmCreateProductviewTag = noopfn;
+  w.cmCreateTechPropsTag = noopfn;
+  w.cmLoadIOConfig = noopfn;
+  w.cmSetClientID = noopfn;
+  w.cmSetCurrencyCode = noopfn;
+  w.cmSetFirstPartyIDs = noopfn;
+  w.cmSetupCookieMigration = noopfn;
+  w.cmSetupNormalization = noopfn;
+
+  w.cmSetupOther = b => {
+    for (const a in b) {
+      window[a] = b[a];
+    }
+  };
+
+  const techProps = {};
+
+  w.coremetrics = {
+    cmLastReferencedPageID: "",
+    cmLoad: noopfn,
+    cmUpdateConfig: noopfn,
+    getTechProps: () => techProps,
+    isDef: c => typeof c !== "undefined" && c,
+  };
 }
diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/facebook-sdk.js b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/facebook-sdk.js
index 4a4dc2db0a1..142f10ae334 100644
--- a/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/facebook-sdk.js
+++ b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/facebook-sdk.js
@@ -83,7 +83,7 @@ if (!window.FB) {
     // which try to match the examples and documentation here:
     // https://developers.facebook.com/docs/facebook-login/web/login-button/
 
-    if (target.hasAttribute("fb-xfbml-state")) {
+    if (target.textContent || target.hasAttribute("fb-xfbml-state")) {
       return;
     }
     target.setAttribute("fb-xfbml-state", "");
@@ -392,6 +392,8 @@ if (!window.FB) {
     },
     AppEvents: {
       activateApp() {},
+      clearAppVersion() {},
+      clearUserID() {},
       EventNames: {
         ACHIEVED_LEVEL: "fb_mobile_level_achieved",
         ADDED_PAYMENT_INFO: "fb_mobile_add_payment_info",
@@ -407,7 +409,11 @@ if (!window.FB) {
         UNLOCKED_ACHIEVEMENT: "fb_mobile_achievement_unlocked",
         VIEWED_CONTENT: "fb_mobile_content_view",
       },
+      getAppVersion: () => "",
+      getUserID: () => "",
+      logEvent() {},
       logPageView() {},
+      logPurchase() {},
       ParameterNames: {
         APP_USER_ID: "_app_user_id",
         APP_VERSION: "_appVersion",
@@ -423,6 +429,9 @@ if (!window.FB) {
         SEARCH_STRING: "fb_search_string",
         SUCCESS: "fb_success",
       },
+      setAppVersion() {},
+      setUserID() {},
+      updateUserProperties() {},
     },
     Canvas: {
       getHash: () => "",
diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/firebase.js b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/firebase.js
new file mode 100644
index 00000000000..b2ea5c54dfd
--- /dev/null
+++ b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/firebase.js
@@ -0,0 +1,39 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Bug 1767407 - Shim Firebase
+ *
+ * Sites relying on firebase-messaging.js will break in Private
+ * browsing mode because it assumes that they require service
+ * workers and indexedDB, when they generally do not.
+ */
+
+/* globals cloneInto */
+
+if (!window.wrappedJSObject.serviceWorker) {
+  const win = window.wrappedJSObject;
+  const emptyArr = new win.Array();
+  const emptyMsg = cloneInto({ message: "" }, window);
+
+  const idb = {
+    open: () => win.Promise.reject(emptyMsg),
+  };
+
+  const sw = {
+    addEventListener() {},
+    getRegistrations: () => win.Promise.resolve(emptyArr),
+    register: () => win.Promise.reject(emptyMsg),
+  };
+
+  Object.defineProperty(win, "indexedDB", {
+    value: cloneInto(idb, window, { cloneFunctions: true }),
+  });
+
+  Object.defineProperty(navigator.wrappedJSObject, "serviceWorker", {
+    value: cloneInto(sw, window, { cloneFunctions: true }),
+  });
+}
diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/google-ads.js b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/google-ads.js
index b3ab38aa95e..a432186f43b 100644
--- a/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/google-ads.js
+++ b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/google-ads.js
@@ -71,3 +71,7 @@ if (window.gapi?._pl === undefined) {
     zoomableimage: stub,
   };
 }
+
+for (const e of document.querySelectorAll("ins.adsbygoogle")) {
+  e.style.maxWidth = "0px";
+}
diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/google-analytics-and-tag-manager.js b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/google-analytics-and-tag-manager.js
index cde4aa61c1a..135b25a4989 100644
--- a/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/google-analytics-and-tag-manager.js
+++ b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/google-analytics-and-tag-manager.js
@@ -174,3 +174,14 @@ if (window[window.GoogleAnalyticsObject || "ga"]?.loaded === undefined) {
   // Run dataLayer.hide.end to handle asynchide (bug 1628151)
   run(window.dataLayer?.hide?.end);
 }
+
+if (!window?.gaplugins?.Linker) {
+  window.gaplugins = window.gaplugins || {};
+  window.gaplugins.Linker = class {
+    autoLink() {}
+    decorate(url) {
+      return url;
+    }
+    passthrough() {}
+  };
+}
diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/google-ima.js b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/google-ima.js
index 0909b20cf73..d05538125ec 100644
--- a/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/google-ima.js
+++ b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/google-ima.js
@@ -12,7 +12,204 @@
  */
 
 if (!window.google?.ima?.VERSION) {
-  const VERSION = "3.453.0";
+  const VERSION = "3.517.2";
+
+  const CheckCanAutoplay = (function() {
+    // Sourced from: https://searchfox.org/mozilla-central/source/dom/media/gtest/negative_duration.mp4
+    const TEST_VIDEO = new Blob(
+      [
+        new Uint32Array([
+          469762048,
+          1887007846,
+          1752392036,
+          0,
+          913273705,
+          1717987696,
+          828601953,
+          -1878917120,
+          1987014509,
+          1811939328,
+          1684567661,
+          0,
+          0,
+          0,
+          -402456576,
+          0,
+          256,
+          1,
+          0,
+          0,
+          256,
+          0,
+          0,
+          0,
+          256,
+          0,
+          0,
+          0,
+          64,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          33554432,
+          -201261056,
+          1801548404,
+          1744830464,
+          1684564852,
+          251658241,
+          0,
+          0,
+          0,
+          0,
+          16777216,
+          0,
+          -1,
+          -1,
+          0,
+          0,
+          0,
+          0,
+          256,
+          0,
+          0,
+          0,
+          256,
+          0,
+          0,
+          0,
+          64,
+          5,
+          53250,
+          -2080309248,
+          1634296941,
+          738197504,
+          1684563053,
+          1,
+          0,
+          0,
+          0,
+          0,
+          -2137614336,
+          -1,
+          -1,
+          50261,
+          754974720,
+          1919706216,
+          0,
+          0,
+          1701079414,
+          0,
+          0,
+          0,
+          1701079382,
+          1851869295,
+          1919249508,
+          16777216,
+          1852402979,
+          102,
+          1752004116,
+          100,
+          1,
+          0,
+          0,
+          1852400676,
+          102,
+          1701995548,
+          102,
+          0,
+          1,
+          1819440396,
+          32,
+          1,
+          1651799011,
+          108,
+          1937011607,
+          100,
+          0,
+          1,
+          1668702599,
+          49,
+          0,
+          1,
+          0,
+          0,
+          0,
+          33555712,
+          4718800,
+          4718592,
+          0,
+          65536,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          0,
+          16776984,
+          1630601216,
+          21193590,
+          -14745500,
+          1729626337,
+          -1407254428,
+          89161945,
+          1049019,
+          9453056,
+          -251611125,
+          27269507,
+          -379058688,
+          -1329024392,
+          268435456,
+          1937011827,
+          0,
+          0,
+          268435456,
+          1668510835,
+          0,
+          0,
+          335544320,
+          2054386803,
+          0,
+          0,
+          0,
+          268435456,
+          1868788851,
+          0,
+          0,
+          671088640,
+          2019915373,
+          536870912,
+          2019914356,
+          0,
+          16777216,
+          16777216,
+          0,
+          0,
+          0,
+        ]),
+      ],
+      { type: "video/mp4" }
+    );
+
+    let testVideo = undefined;
+
+    return function() {
+      if (!testVideo) {
+        testVideo = document.createElement("video");
+        testVideo.style =
+          "position:absolute; width:0; height:0; left:0; right:0; z-index:-1; border:0";
+        testVideo.setAttribute("muted", "muted");
+        testVideo.setAttribute("playsinline", "playsinline");
+        testVideo.src = URL.createObjectURL(TEST_VIDEO);
+        document.body.appendChild(testVideo);
+      }
+      return testVideo.play();
+    };
+  })();
 
   let ima = {};
 
@@ -95,8 +292,6 @@ if (!window.google?.ima?.VERSION) {
     INSECURE: 2,
   };
 
-  let managerLoaded = false;
-
   class EventHandler {
     #listeners = new Map();
 
@@ -134,13 +329,24 @@ if (!window.google?.ima?.VERSION) {
       return VERSION;
     }
     requestAds(r, c) {
-      if (!managerLoaded) {
-        managerLoaded = true;
-        requestAnimationFrame(() => {
+      // If autoplay is disabled and the page is trying to autoplay a tracking
+      // ad, then IMA fails with an error, and the page is expected to request
+      // ads again later when the user clicks to play.
+      CheckCanAutoplay.then(
+        () => {
           const { ADS_MANAGER_LOADED } = AdsManagerLoadedEvent.Type;
           this._dispatch(new ima.AdsManagerLoadedEvent(ADS_MANAGER_LOADED));
-        });
-      }
+        },
+        () => {
+          const e = new ima.AdError(
+            "adPlayError",
+            1205,
+            1205,
+            "The browser prevented playback initiated without user interaction."
+          );
+          this._dispatch(new ima.AdErrorEvent(e));
+        }
+      );
     }
   }
 
@@ -360,21 +566,31 @@ if (!window.google?.ima?.VERSION) {
   }
 
   class AdError {
+    #errorCode = -1;
+    #message = "";
+    #type = "";
+    #vastErrorCode = -1;
+    constructor(type, code, vast, message) {
+      this.#errorCode = code;
+      this.#message = message;
+      this.#type = type;
+      this.#vastErrorCode = vast;
+    }
     getErrorCode() {
-      return 0;
+      return this.#errorCode;
     }
     getInnerError() {}
     getMessage() {
-      return "";
+      return this.#message;
     }
     getType() {
-      return "";
+      return this.#type;
     }
     getVastErrorCode() {
-      return 0;
+      return this.#vastErrorCode;
     }
     toString() {
-      return "";
+      return `AdError ${this.#errorCode}: ${this.#message}`;
     }
   }
   AdError.ErrorCode = {};
@@ -440,7 +656,14 @@ if (!window.google?.ima?.VERSION) {
   };
 
   class AdErrorEvent {
-    getError() {}
+    type = "adError";
+    #error = "";
+    constructor(error) {
+      this.#error = error;
+    }
+    getError() {
+      return this.#error;
+    }
     getUserRequestContext() {
       return {};
     }
diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/google-publisher-tags.js b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/google-publisher-tags.js
index 709c5af3b79..2480c9539f9 100644
--- a/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/google-publisher-tags.js
+++ b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/google-publisher-tags.js
@@ -32,7 +32,7 @@ if (window.googletag?.apiReady === undefined) {
       requestAnimationFrame(() => {
         const size = [0, 0];
         for (const cb of eventCallbacks.get(name) || []) {
-          cb({ isEmpty: false, size, slot });
+          cb({ isEmpty: true, size, slot });
         }
         resolve();
       });
@@ -49,6 +49,8 @@ if (window.googletag?.apiReady === undefined) {
       f.srcdoc = "<body></body>";
       f.style =
         "position:absolute; width:0; height:0; left:0; right:0; z-index:-1; border:0";
+      f.setAttribute("width", 0);
+      f.setAttribute("height", 0);
       node.appendChild(f);
     }
   };
@@ -94,6 +96,13 @@ if (window.googletag?.apiReady === undefined) {
     return this;
   };
 
+  const removeEventListener = function(name, listener) {
+    if (eventCallbacks.has(name)) {
+      return eventCallbacks.get(name).delete(listener);
+    }
+    return false;
+  };
+
   const companionAdsService = {
     addEventListener,
     display,
@@ -112,6 +121,7 @@ if (window.googletag?.apiReady === undefined) {
     notifyUnfilledSlots() {},
     onImplementationLoaded() {},
     refreshAllSlots() {},
+    removeEventListener,
     set() {},
     setRefreshUnfilledSlots() {},
     setVideoSession() {},
@@ -121,6 +131,7 @@ if (window.googletag?.apiReady === undefined) {
   const contentService = {
     addEventListener,
     setContent() {},
+    removeEventListener,
   };
 
   const getTargetingValue = v => {
@@ -143,6 +154,10 @@ if (window.googletag?.apiReady === undefined) {
   };
 
   const newSlot = (adUnitPath, size, opt_div) => {
+    if (slotsById.has(opt_div)) {
+      document.getElementById(opt_div)?.remove();
+      return undefined;
+    }
     const attributes = new Map();
     const targeting = new Map();
     const exclusions = new Set();
@@ -318,6 +333,7 @@ if (window.googletag?.apiReady === undefined) {
         }
       }
     },
+    removeEventListener,
     set(k, v) {
       gAttributes[k] = v;
       return this;
diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/iam.js b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/iam.js
new file mode 100644
index 00000000000..84dee0e484d
--- /dev/null
+++ b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/iam.js
@@ -0,0 +1,39 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Bug 1761774 - Shim INFOnline IAM tracker
+ *
+ * Sites using IAM can break if it is blocked. This shim mitigates that
+ * breakage by loading a stand-in module.
+ */
+
+if (!window.iom?.c) {
+  window.iom = {
+    c: () => {},
+    consent: () => {},
+    count: () => {},
+    ct: () => {},
+    deloptout: () => {},
+    doo: () => {},
+    e: () => {},
+    event: () => {},
+    getInvitation: () => {},
+    getPlus: () => {},
+    gi: () => {},
+    gp: () => {},
+    h: () => {},
+    hybrid: () => {},
+    i: () => {},
+    init: () => {},
+    oi: () => {},
+    optin: () => {},
+    setMultiIdentifier: () => {},
+    setoptout: () => {},
+    smi: () => {},
+    soo: () => {},
+  };
+}
diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/nielsen.js b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/nielsen.js
new file mode 100644
index 00000000000..5584a126cb2
--- /dev/null
+++ b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/nielsen.js
@@ -0,0 +1,114 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Bug 1760754 - Shim Nielsen tracker
+ *
+ * Sites expecting the Nielsen tracker to load properly can break if it
+ * is blocked. This shim mitigates that breakage by loading a stand-in.
+ */
+
+if (!window.nol_t) {
+  const cid = "";
+
+  let domain = "";
+  let schemeHost = "";
+  let scriptName = "";
+  try {
+    const url = document?.currentScript?.src;
+    const { pathname, protocol, host } = new URL(url);
+    domain = host
+      .split(".")
+      .slice(0, -2)
+      .join(".");
+    schemeHost = `${protocol}//${host}/`;
+    scriptName = pathname.split("/").pop();
+  } catch (_) {}
+
+  const NolTracker = class {
+    CONST = {
+      max_tags: 20,
+    };
+    feat = {};
+    globals = {
+      cid,
+      content: "0",
+      defaultApidFile: "config250",
+      defaultErrorParams: {
+        nol_vcid: "c00",
+        nol_clientid: "",
+      },
+      domain,
+      fpidSfCodeList: [""],
+      init() {},
+      tagCurrRetry: -1,
+      tagMaxRetry: 3,
+      wlCurrRetry: -1,
+      wlMaxRetry: 3,
+    };
+    pmap = [];
+    pvar = {
+      cid,
+      content: "0",
+      cookies_enabled: "n",
+      server: domain,
+    };
+    scriptName = [scriptName];
+    version = "6.0.107";
+
+    addScript() {}
+    catchLinkOverlay() {}
+    clickEvent() {}
+    clickTrack() {}
+    do_sample() {}
+    downloadEvent() {}
+    eventTrack() {}
+    filter() {}
+    fireToUrl() {}
+    getSchemeHost() {
+      return schemeHost;
+    }
+    getVersion() {}
+    iframe() {}
+    in_sample() {
+      return true;
+    }
+    injectBsdk() {}
+    invite() {}
+    linkTrack() {}
+    mergeFeatures() {}
+    pageEvent() {}
+    pause() {}
+    populateWhitelist() {}
+    post() {}
+    postClickTrack() {}
+    postData() {}
+    postEvent() {}
+    postEventTrack() {}
+    postLinkTrack() {}
+    prefix() {
+      return "";
+    }
+    processDdrsSvc() {}
+    random() {}
+    record() {
+      return this;
+    }
+    regLinkOverlay() {}
+    regListen() {}
+    retrieveCiFileViaCors() {}
+    sectionEvent() {}
+    sendALink() {}
+    sendForm() {}
+    sendIt() {}
+    slideEvent() {}
+    whitelistAssigned() {}
+  };
+
+  window.nol_t = () => {
+    return new NolTracker();
+  };
+}
diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/private-browsing-web-api-fixes.js b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/private-browsing-web-api-fixes.js
new file mode 100644
index 00000000000..bc45aeda26a
--- /dev/null
+++ b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/private-browsing-web-api-fixes.js
@@ -0,0 +1,17 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+/**
+ * Bug 1714354 - Fix for site issues with web APIs in private browsing
+ *
+ * Some sites expect specific DOM APIs to work in specific ways, which
+ * is not always true, such as in private browsing mode. We work around
+ * related breakage by undefining those APIs entirely in private
+ * browsing mode for those sites.
+ */
+
+delete window.wrappedJSObject.caches;
+delete window.wrappedJSObject.indexedDB;
diff --git a/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/rich-relevance.js b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/rich-relevance.js
index c1e7e686ee8..aea85c030a9 100644
--- a/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/rich-relevance.js
+++ b/components/feature/webcompat/src/main/assets/extensions/webcompat/shims/rich-relevance.js
@@ -190,7 +190,11 @@ if (!window.r3_common) {
     charset: "UTF-8",
     checkParamCookieValue: () => null,
     d: document,
-    data: { JSON },
+    data: {
+      JSON: {
+        placements: [],
+      },
+    },
     debugWindow() {},
     set defaultCallback(fn) {
       call(fn);