Program: 17498
Project: 17498
Buggy source:
@Override public Dialog onCreateDialog(Bundle savedInstanceState){
  AlertDialog.Builder builder=new AlertDialog.Builder(getActivity());
  builder.setTitle(R.string.uv_article_instant_answer_question);
  webView=new WebView(getActivity());
  builder.setView(webView);
  Utils.displayArticle(webView,article,getActivity());
  builder.setNegativeButton(R.string.uv_no,new DialogInterface.OnClickListener(){
    @Override public void onClick(    DialogInterface dialog,    int which){
      if (getActivity() instanceof InstantAnswersActivity) {
        Deflection.trackDeflection("String_Node_Str",article);
        InstantAnswersActivity activity=(InstantAnswersActivity)getActivity();
        InstantAnswersAdapter adapter=(InstantAnswersAdapter)activity.getListAdapter();
        adapter.notHelpful();
      }
 else {
        UnhelpfulDialogFragment dialogFragment=new UnhelpfulDialogFragment();
        dialogFragment.show(getActivity().getSupportFragmentManager(),"String_Node_Str");
      }
    }
  }
);
  builder.setPositiveButton(R.string.uv_very_yes,new DialogInterface.OnClickListener(){
    @Override public void onClick(    DialogInterface dialog,    int which){
      Babayaga.track(Babayaga.Event.VOTE_ARTICLE,article.getId());
      if (getActivity() instanceof InstantAnswersActivity) {
        Deflection.trackDeflection("String_Node_Str",article);
        HelpfulDialogFragment helpfulDialog=new HelpfulDialogFragment();
        helpfulDialog.show(getActivity().getSupportFragmentManager(),"String_Node_Str");
      }
    }
  }
);
  Babayaga.track(Babayaga.Event.VIEW_ARTICLE,article.getId());
  return builder.create();
}

Fixed version (ground truth):
@Override public Dialog onCreateDialog(Bundle savedInstanceState){
  AlertDialog.Builder builder=new AlertDialog.Builder(getActivity());
  builder.setTitle(R.string.uv_article_instant_answer_question);
  webView=new WebView(getActivity());
  if (!Utils.isDarkTheme(getActivity())) {
    builder.setInverseBackgroundForced(true);
  }
  builder.setView(webView);
  Utils.displayArticle(webView,article,getActivity());
  builder.setNegativeButton(R.string.uv_no,new DialogInterface.OnClickListener(){
    @Override public void onClick(    DialogInterface dialog,    int which){
      if (getActivity() instanceof InstantAnswersActivity) {
        Deflection.trackDeflection("String_Node_Str",article);
        InstantAnswersActivity activity=(InstantAnswersActivity)getActivity();
        InstantAnswersAdapter adapter=(InstantAnswersAdapter)activity.getListAdapter();
        adapter.notHelpful();
      }
 else {
        UnhelpfulDialogFragment dialogFragment=new UnhelpfulDialogFragment();
        dialogFragment.show(getActivity().getSupportFragmentManager(),"String_Node_Str");
      }
    }
  }
);
  builder.setPositiveButton(R.string.uv_very_yes,new DialogInterface.OnClickListener(){
    @Override public void onClick(    DialogInterface dialog,    int which){
      Babayaga.track(Babayaga.Event.VOTE_ARTICLE,article.getId());
      if (getActivity() instanceof InstantAnswersActivity) {
        Deflection.trackDeflection("String_Node_Str",article);
        HelpfulDialogFragment helpfulDialog=new HelpfulDialogFragment();
        helpfulDialog.show(getActivity().getSupportFragmentManager(),"String_Node_Str");
      }
    }
  }
);
  Babayaga.track(Babayaga.Event.VIEW_ARTICLE,article.getId());
  return builder.create();
}