[Wayland] Multitouch is not working in Qt6

In Qt6 it's not possible to activate two separate Buttons simultaneously using multitouch.

To reproduce the issue run the attached example with pure-qml Wayland compositor example. Using touch screen it should be able to press down the first button and use another finger to press and release the other button. The second button receives the press event, but is still not activated and when releasing touch the release event does not come to the Button. 

Using Qt 5.15.9 the same example works as expected.