Hard to figure out what is the issue. I tried with our board we are not seeing the same behaviour. If it is failing with Qt widgets, can you check with QML application. It is just to eliminate the possibilities.

As I now understand it there is no easy way to recognize gestures inside the c++ part of a Qt Quick 'QQuickPaintedItem' inherited class, is that correct? I need both pan and pinch in my c++ class so if i dont want to write my own recognition code should I then inherit my class from both 'QQuickPaintedItem', PinchArea and Flickable? that doesn't seem right? (besides that they are declared in private header files like qquickpincharea_p.h) found the same request (also without an statisfying answer here: https://forum.qt.io/topic/61108/recognize-arbitrary-gestures-in-qt5-like-gesturearea-in-qt4 )

Hi, You have several wiki pages about Qt and the Raspberry Pi, see here for a start.

Sorry, I haven't used wayland yet, can't help you currently