fix: Only hide WidgetDiv if it is associated with the affected workspace.

core/block_svg.ts

@@ -599,7 +599,7 @@ export class BlockSvg
     const menuOptions = this.generateContextMenu();
 
     if (menuOptions && menuOptions.length) {
-      ContextMenu.show(e, menuOptions, this.RTL);
+      ContextMenu.show(e, menuOptions, this.RTL, this.workspace);
       ContextMenu.setCurrentBlock(this);
     }
   }

core/comments/rendered_workspace_comment.ts

@@ -254,7 +254,7 @@ export class RenderedWorkspaceComment
       ContextMenuRegistry.ScopeType.COMMENT,
       {comment: this},
     );
-    contextMenu.show(e, menuOptions, this.workspace.RTL);
+    contextMenu.show(e, menuOptions, this.workspace.RTL, this.workspace);
   }
 
   /** Snap this comment to the nearest grid point. */

core/contextmenu.ts

@@ -23,6 +23,7 @@ import {Rect} from './utils/rect.js';
 import * as serializationBlocks from './serialization/blocks.js';
 import * as svgMath from './utils/svg_math.js';
 import * as WidgetDiv from './widgetdiv.js';
+import type {WorkspaceSvg} from './workspace_svg.js';
 import * as Xml from './xml.js';
 import * as common from './common.js';
 
@@ -62,13 +63,15 @@ let menu_: Menu | null = null;
  * @param e Mouse event.
  * @param options Array of menu options.
  * @param rtl True if RTL, false if LTR.
+ * @param workspace The workspace associated with the context menu, if any.
  */
 export function show(
   e: PointerEvent,
   options: (ContextMenuOption | LegacyContextMenuOption)[],
   rtl: boolean,
+  workspace?: WorkspaceSvg,
 ) {
-  WidgetDiv.show(dummyOwner, rtl, dispose);
+  WidgetDiv.show(dummyOwner, rtl, dispose, workspace);
   if (!options.length) {
     hide();
     return;

core/field_input.ts

@@ -372,7 +372,12 @@ export abstract class FieldInput<T extends InputTypes> extends Field<
     if (!block) {
       throw new UnattachedFieldError();
     }
-    WidgetDiv.show(this, block.RTL, this.widgetDispose_.bind(this));
+    WidgetDiv.show(
+      this,
+      block.RTL,
+      this.widgetDispose_.bind(this),
+      this.workspace_,
+    );
     this.htmlInput_ = this.widgetCreate_() as HTMLInputElement;
     this.isBeingEdited_ = true;
     this.valueWhenEditorWasOpened_ = this.value_;
@@ -546,17 +551,17 @@ export abstract class FieldInput<T extends InputTypes> extends Field<
    */
   protected onHtmlInputKeyDown_(e: KeyboardEvent) {
     if (e.key === 'Enter') {
-      WidgetDiv.hide();
+      WidgetDiv.hideIfOwner(this);
       dropDownDiv.hideWithoutAnimation();
     } else if (e.key === 'Escape') {
       this.setValue(
         this.htmlInput_!.getAttribute('data-untyped-default-value'),
         false,
       );
-      WidgetDiv.hide();
+      WidgetDiv.hideIfOwner(this);
       dropDownDiv.hideWithoutAnimation();
     } else if (e.key === 'Tab') {
-      WidgetDiv.hide();
+      WidgetDiv.hideIfOwner(this);
       dropDownDiv.hideWithoutAnimation();
       (this.sourceBlock_ as BlockSvg).tab(this, !e.shiftKey);
       e.preventDefault();

core/flyout_horizontal.ts

@@ -240,7 +240,7 @@ export class HorizontalFlyout extends Flyout {
       this.workspace_.scrollbar?.setX(pos);
       // When the flyout moves from a wheel event, hide WidgetDiv and
       // dropDownDiv.
-      WidgetDiv.hide();
+      WidgetDiv.hideIfOwnerIsInWorkspace(this.workspace_);
       dropDownDiv.hideWithoutAnimation();
     }
     // Don't scroll the page.

core/flyout_vertical.ts

@@ -209,7 +209,7 @@ export class VerticalFlyout extends Flyout {
       this.workspace_.scrollbar?.setY(pos);
       // When the flyout moves from a wheel event, hide WidgetDiv and
       // dropDownDiv.
-      WidgetDiv.hide();
+      WidgetDiv.hideIfOwnerIsInWorkspace(this.workspace_);
       dropDownDiv.hideWithoutAnimation();
     }
     // Don't scroll the page.

core/widgetdiv.ts

@@ -8,14 +8,17 @@
 
 import * as common from './common.js';
 import * as dom from './utils/dom.js';
-import type {Field} from './field.js';
+import {Field} from './field.js';
 import type {Rect} from './utils/rect.js';
 import type {Size} from './utils/size.js';
 import type {WorkspaceSvg} from './workspace_svg.js';
 
 /** The object currently using this container. */
 let owner: unknown = null;
 
+/** The workspace associated with the owner currently using this container. */
+let ownerWorkspace: WorkspaceSvg | null = null;
+
 /** Optional cleanup function set by whichever object uses the widget. */
 let dispose: (() => void) | null = null;
 
@@ -76,18 +79,31 @@ export function createDom() {
  * @param rtl Right-to-left (true) or left-to-right (false).
  * @param newDispose Optional cleanup function to be run when the widget is
  *     closed.
+ * @param workspace The workspace associated with the widget owner.
  */
-export function show(newOwner: unknown, rtl: boolean, newDispose: () => void) {
+export function show(
+  newOwner: unknown,
+  rtl: boolean,
+  newDispose: () => void,
+  workspace?: WorkspaceSvg | null,
+) {
   hide();
   owner = newOwner;
   dispose = newDispose;
   const div = containerDiv;
   if (!div) return;
   div.style.direction = rtl ? 'rtl' : 'ltr';
   div.style.display = 'block';
-  const mainWorkspace = common.getMainWorkspace() as WorkspaceSvg;
-  rendererClassName = mainWorkspace.getRenderer().getClassName();
-  themeClassName = mainWorkspace.getTheme().getClassName();
+  if (!workspace && newOwner instanceof Field) {
+    // For backward compatibility with plugin fields that do not provide a
+    // workspace to this function, attempt to derive it from the field.
+    workspace = (newOwner as Field).getSourceBlock()?.workspace as WorkspaceSvg;
+  }
+  ownerWorkspace = workspace ?? null;
+  const rendererWorkspace =
+    workspace ?? (common.getMainWorkspace() as WorkspaceSvg);
+  rendererClassName = rendererWorkspace.getRenderer().getClassName();
+  themeClassName = rendererWorkspace.getTheme().getClassName();
   if (rendererClassName) {
     dom.addClass(div, rendererClassName);
   }
@@ -145,6 +161,19 @@ export function hideIfOwner(oldOwner: unknown) {
     hide();
   }
 }
+
+/**
+ * Destroy the widget and hide the div if it is being used by an object in the
+ * specified workspace.
+ *
+ * @param oldOwnerWorkspace The workspace that was using this container.
+ */
+export function hideIfOwnerIsInWorkspace(oldOwnerWorkspace: WorkspaceSvg) {
+  if (ownerWorkspace === oldOwnerWorkspace) {
+    hide();
+  }
+}
+
 /**
  * Set the widget div's position and height.  This function does nothing clever:
  * it will not ensure that your widget div ends up in the visible window.

core/workspace_svg.ts

@@ -1686,7 +1686,7 @@ export class WorkspaceSvg extends Workspace implements IASTNodeLocationSvg {
       this.configureContextMenu(menuOptions, e);
     }
 
-    ContextMenu.show(e, menuOptions, this.RTL);
+    ContextMenu.show(e, menuOptions, this.RTL, this);
   }
 
   /**
@@ -2376,7 +2376,7 @@ export class WorkspaceSvg extends Workspace implements IASTNodeLocationSvg {
    */
   hideChaff(onlyClosePopups = false) {
     Tooltip.hide();
-    WidgetDiv.hide();
+    WidgetDiv.hideIfOwnerIsInWorkspace(this);
     dropDownDiv.hideWithoutAnimation();
 
     this.hideComponents(onlyClosePopups);