iOS iPad: resize on QMainWindow ends up with graphical glitches

After calling resize for QMainWindow object the object does not update properly and produce a graphical glitch (white area on the attached screenshot - after_resizing.png).

This issue does happen only on iOS iPad (tested with iPad 6 iOS 16.x and iPad 9 iOS 17.x).

Also, it does not happen with Qt V5.15.17.

Attached example reproduces it, Run and hit Resize Button. 

Same works on Android Samsung Galaxy tablet.

With 6.7.2 some time resize button disappears after hitting resize, 6.8 some time Button is not visible at all.