Program: 87747
Project: 87747
Buggy source:
@Override public void onUpdateSelection(final int oldSelStart,final int oldSelEnd,final int newSelStart,final int newSelEnd,final int composingSpanStart,final int composingSpanEnd){
  super.onUpdateSelection(oldSelStart,oldSelEnd,newSelStart,newSelEnd,composingSpanStart,composingSpanEnd);
  if (DEBUG) {
    Log.i(TAG,"String_Node_Str" + oldSelStart + "String_Node_Str"+ oldSelEnd+ "String_Node_Str"+ mLastSelectionStart+ "String_Node_Str"+ mLastSelectionEnd+ "String_Node_Str"+ newSelStart+ "String_Node_Str"+ newSelEnd+ "String_Node_Str"+ composingSpanStart+ "String_Node_Str"+ composingSpanEnd);
  }
  if (ProductionFlag.USES_DEVELOPMENT_ONLY_DIAGNOSTICS) {
    final boolean expectingUpdateSelectionFromLogger=ResearchLogger.getAndClearLatinIMEExpectingUpdateSelection();
    ResearchLogger.latinIME_onUpdateSelection(mLastSelectionStart,mLastSelectionEnd,oldSelStart,oldSelEnd,newSelStart,newSelEnd,composingSpanStart,composingSpanEnd,mExpectingUpdateSelection,expectingUpdateSelectionFromLogger,mConnection);
    if (expectingUpdateSelectionFromLogger) {
      return;
    }
  }
  final boolean selectionChanged=(newSelStart != composingSpanEnd || newSelEnd != composingSpanEnd) && mLastSelectionStart != newSelStart;
  final boolean noComposingSpan=composingSpanStart == -1 && composingSpanEnd == -1;
  if (!mExpectingUpdateSelection && !mConnection.isBelatedExpectedUpdate(oldSelStart,newSelStart)) {
    mSpaceState=SPACE_STATE_NONE;
    if ((!mWordComposer.isComposingWord()) || selectionChanged || noComposingSpan) {
      resetEntireInputState(newSelStart);
    }
    mHandler.postResumeSuggestions();
    mKeyboardSwitcher.updateShiftState();
  }
  mExpectingUpdateSelection=false;
  mLastSelectionStart=newSelStart;
  mLastSelectionEnd=newSelEnd;
  mSubtypeState.currentSubtypeUsed();
}

Fixed version (ground truth):
@Override public void onUpdateSelection(final int oldSelStart,final int oldSelEnd,final int newSelStart,final int newSelEnd,final int composingSpanStart,final int composingSpanEnd){
  super.onUpdateSelection(oldSelStart,oldSelEnd,newSelStart,newSelEnd,composingSpanStart,composingSpanEnd);
  if (DEBUG) {
    Log.i(TAG,"String_Node_Str" + oldSelStart + "String_Node_Str"+ oldSelEnd+ "String_Node_Str"+ mLastSelectionStart+ "String_Node_Str"+ mLastSelectionEnd+ "String_Node_Str"+ newSelStart+ "String_Node_Str"+ newSelEnd+ "String_Node_Str"+ composingSpanStart+ "String_Node_Str"+ composingSpanEnd);
  }
  if (ProductionFlag.USES_DEVELOPMENT_ONLY_DIAGNOSTICS) {
    final boolean expectingUpdateSelectionFromLogger=ResearchLogger.getAndClearLatinIMEExpectingUpdateSelection();
    ResearchLogger.latinIME_onUpdateSelection(mLastSelectionStart,mLastSelectionEnd,oldSelStart,oldSelEnd,newSelStart,newSelEnd,composingSpanStart,composingSpanEnd,mExpectingUpdateSelection,expectingUpdateSelectionFromLogger,mConnection);
    if (expectingUpdateSelectionFromLogger) {
      return;
    }
  }
  final boolean selectionChanged=(newSelStart != composingSpanEnd || newSelEnd != composingSpanEnd) && mLastSelectionStart != newSelStart;
  final boolean noComposingSpan=composingSpanStart == -1 && composingSpanEnd == -1;
  if (!mExpectingUpdateSelection && !mConnection.isBelatedExpectedUpdate(oldSelStart,newSelStart)) {
    mSpaceState=SPACE_STATE_NONE;
    if ((!mWordComposer.isComposingWord()) || selectionChanged || noComposingSpan) {
      resetEntireInputState(newSelStart);
    }
    mHandler.postResumeSuggestions();
    mRecapitalizeStatus=null;
    mKeyboardSwitcher.updateShiftState();
  }
  mExpectingUpdateSelection=false;
  mLastSelectionStart=newSelStart;
  mLastSelectionEnd=newSelEnd;
  mSubtypeState.currentSubtypeUsed();
}