MouseWheelEvent is not sent to next Flickable if first Flickable does not accept it

1) Create to Flickables, one inside the other;
2) Set the flickableDirection of the first one as VerticalFlick;
3) Set the flickableDirection of the second (inner) one as HorizontalFlick;
4) If you exec an wheelEvent (VerticalFlick) over the second one this event is not passed to the first one.

Attached a small QML example of the issue