[RNMobile] Fix dictation regression on iOS (#49452)

These changes address an issue with dictation not working as expected on devices running iOS 16 or later.

packages/react-native-aztec/ios/RNTAztecView/RCTAztecView.swift

@@ -95,12 +95,6 @@ class RCTAztecView: Aztec.TextView {
         let placeholderWidthInset = 2 * leftTextInset
         return placeholderLabel.widthAnchor.constraint(equalTo: widthAnchor, constant: -placeholderWidthInset)
     }()
-
-    /// If a dictation start with an empty UITextView,
-    /// the dictation engine refreshes the TextView with an empty string when the dictation finishes.
-    /// This helps to avoid propagating that unwanted empty string to RN. (Solving #606)
-    /// on `textViewDidChange` and `textViewDidChangeSelection`
-    private var isInsertingDictationResult = false
 
     // MARK: - Font
 
@@ -355,16 +349,18 @@ class RCTAztecView: Aztec.TextView {
     }
 
     // MARK: - Dictation
-
-    override func dictationRecordingDidEnd() {
-        isInsertingDictationResult = true
-    }
-
-    public override func insertDictationResult(_ dictationResult: [UIDictationPhrase]) {
-        let objectPlaceholder = "\u{FFFC}"
-        let dictationText = dictationResult.reduce("") { $0 + $1.text }
-        isInsertingDictationResult = false
-        self.text = self.text?.replacingOccurrences(of: objectPlaceholder, with: dictationText)
+
+    func removeUnicodeAndRestoreCursor(from textView: UITextView) {
+        // Capture current cursor position
+        let originalPosition = textView.offset(from: textView.beginningOfDocument, to: textView.selectedTextRange?.start ?? textView.beginningOfDocument)
+
+        // Replace occurrences of the obj symbol ("\u{FFFC}")
+        textView.text = textView.text?.replacingOccurrences(of: "\u{FFFC}", with: "")
+
+        if let newPosition = textView.position(from: textView.beginningOfDocument, offset: originalPosition) {
+            // Move the cursor to the correct, new position following dictation
+            textView.selectedTextRange = textView.textRange(from: newPosition, to: newPosition)
+        }
     }
 
     // MARK: - Custom Edit Intercepts
@@ -771,7 +767,7 @@ class RCTAztecView: Aztec.TextView {
 extension RCTAztecView: UITextViewDelegate {
 
     func textViewDidChangeSelection(_ textView: UITextView) {
-        guard isFirstResponder, isInsertingDictationResult == false else {
+        guard isFirstResponder else {
             return
         }
 
@@ -784,10 +780,13 @@ extension RCTAztecView: UITextViewDelegate {
     }
 
     func textViewDidChange(_ textView: UITextView) {
-        guard isInsertingDictationResult == false else {
-            return
+        // Workaround for RN dictation bug that adds obj symbol.
+        // Ref: https://github.com/facebook/react-native/issues/36521
+        // TODO: Remove workaround when RN issue is fixed
+        if textView.text?.contains("\u{FFFC}") == true {
+            removeUnicodeAndRestoreCursor(from: textView)
         }
-        
+
         propagateContentChanges()
         updatePlaceholderVisibility()
         //Necessary to send height information to JS after pasting text.

packages/react-native-editor/CHANGELOG.md

@@ -21,6 +21,8 @@ For each user feature we should also add a importance categorization label  to i
 -   [**] Fix undo/redo history when inserting a link configured to open in a new tab [#50460]
 -   [*] [List block] Fix an issue when merging a list item into a Paragraph would remove its nested list items. [#50701]
 
+-   [**] [iOS] Fix dictation regression, in which typing/dictating at the same time caused content loss. [#49452]
+
 ## 1.95.0
 -   [*] Fix crash when trying to convert to regular blocks an undefined/deleted reusable block [#50475]
 -   [**] Tapping on nested text blocks gets focus directly instead of having to tap multiple times depeding on the nesting levels. [#50108]