IndexOutOfBoundsException: charAt: X >= length X

[sentry-io]

Sentry Issue: JETPACK-ANDROID-87V

Exception java.lang.IndexOutOfBoundsException:
    at android.text.SpannableStringBuilder.charAt (SpannableStringBuilder.java:126)
    at android.text.CharSequenceCharacterIterator.current (CharSequenceCharacterIterator.java:58)
    at android.text.CharSequenceCharacterIterator.setIndex (CharSequenceCharacterIterator.java:83)
    at android.icu.text.RuleBasedBreakIterator.CISetIndex32 (RuleBasedBreakIterator.java:1055)
    at android.icu.text.RuleBasedBreakIterator.isBoundary (RuleBasedBreakIterator.java:549)
    at android.text.method.WordIterator.isBoundary (WordIterator.java:102)
    at android.widget.Editor$SelectionHandleView.positionAtCursorOffset (Editor.java:7885)
    at android.widget.Editor$HandleView.invalidate (Editor.java:5998)
    at android.widget.Editor$SelectionModifierCursorController.invalidateHandles (Editor.java:8845)
    at android.widget.Editor.invalidateHandlesAndActionMode (Editor.java:2527)
    at android.widget.TextView.spanChange (TextView.java:12117)
    at android.widget.TextView$ChangeWatcher.onSpanChanged (TextView.java:15308)
    at android.text.SpannableStringBuilder.sendSpanChanged (SpannableStringBuilder.java:1321)
    at android.text.SpannableStringBuilder.setSpan (SpannableStringBuilder.java:766)
    at android.text.SpannableStringBuilder.setSpan (SpannableStringBuilder.java:690)
    at androidx.emoji2.text.SpannableBuilder.setSpan (SpannableBuilder.java:135)
    at org.wordpress.aztec.watchers.SuggestionWatcher.reapplyCarriedOverInlineSpans (SuggestionWatcher.kt:146)
    at org.wordpress.aztec.watchers.SuggestionWatcher.onTextChanged (SuggestionWatcher.kt:82)
    at org.wordpress.mobile.ReactNativeAztec.ReactAztecText$TextWatcherDelegator.onTextChanged (ReactAztecText.java:624)

[dangermattic]

Thanks for reporting! 👍

[sentry-io]

Sentry Issue: WORDPRESS-ANDROID-2J4P

[antonis]

The crash occurs on this line of the Aztec editor.

[antonis]

I merged all the relevant Sentry issues which were reported separately due to the different index and length after noticing the issue trending high on app vitals.

[antonis]

The crash occurs on this line of the Aztec editor.

The exception is thrown from the SpannableStringBuilder when the requested character position >= length and the logs show that in all cases it is thrown when position == length.