anchor.diff:      ) target = querySelector(_elementId);
       
       if (target != null) {
  -      _control = target..style.display = _visible ? 'inline' : 'block';
  +      _control = target;
  +      
  +      _updateVisibility();
         
         _reflowManager = new ReflowManager();
   
  
positive.code:   //---------------------------------
  
    void _setControl(Element element) {
      _control = element..style.display = _visible ? 'inline' : 'block';
      
      if (_inheritsDefaultCSS)
        _reflowManager.scheduleMethod(this, _addDefaultClass, [], forceSingleExecution: true);
  
negative.code:   }
  
    void _updateVisibility() {
      if (_control != null) _reflowManager.invalidateCSS(_control, 'display', (_visible ? 'block' : 'none'));
    }
  
    void _addAllPendingElements() {
  