This is a rather invasive change which requires in some case some slight change in apps to look good. So the Qt6/kf6 transition is the ideal time to do it.
This require the following change for now and we should try to merge and release them closely together:
Framework
Apps
- kmenuedit!26
- system/dolphin!600
- utilities/kate!1286
- utilities/ark!191
- graphics/okular!811 (merged)
- graphics/okular!812
Some screenshot of apps with these changes applied: