GWT forward mouse wheel event to underlying element

I have a popup panel which should disappear on mouse wheel and forward the event to the underlying DOM element. I do it like the following:

popupPanel.addDomHandler(new MouseWheelHandler() {          @Override          public void onMouseWheel(final MouseWheelEvent event) {              popupPanel.hide();                // forward mouse wheel event              final Element element = DOMUtil.elementFromPoint(event.getClientX(), event.getClientY());              if (event.getNativeEvent() != null) {                  final NativeEvent nativeEvent = event.getNativeEvent();                  Scheduler.get().scheduleDeferred(new Scheduler.ScheduledCommand() {                      @Override                      public void execute() {                          element.dispatchEvent(nativeEvent);                      }                  });              }          }  }, MouseWheelEvent.getType());

The popup panel will hide itself, but scroll event gets lost. I tried to debug it, but without result. Is it possible to implement it some other way?

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