Created attachment 151801 [details]
An example of bug

SUMMARY
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Applications menus' are not opening in correct position in wayland systems when it is in right side of screen
but working correct on X11
On the other hand Windows Manager Configure menus are opening in correct order.
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STEPS TO REPRODUCE
1.  For example open dolphin application
2.  Move it to near right side of screen
3.  open a cascaded menu ( i mean  menu entries which have lots of inner menu item )
4. Try to select 2. or 3. item item on menu

OBSERVED RESULT
First menu opens in correct position but second of the others opens above current one

EXPECTED RESULT
Second or others should open opposite position instead of covering current position


SOFTWARE/OS VERSIONS
KDE Plasma Version: 5.25.80
KDE Frameworks Version: 5.98
Qt Version: 5.15.5