Qt 6.9.0 + master result in broken windows on Ubuntu 22.04 #738
Description
Building with current Qt-Advanced-Docking-System master or last release tag with Qt 6.9.0 works since my pr, but the issues go further.
- checkout and do a full build with Qt 6.9.0 or 6.8.3 or 6.7.3
- run ./x64/bin/CentralWidgetExample
- drag any tabbed widget out of its tabbing area
- the result is a broken and flickering main window:
System: Ubuntu 22.04.5 LTS
Everything works fine on Windows 10.
It seems to be the same as #713
