Created attachment 150388 [details]
Screenshot. Red arrow just indicates that the cursor was moved from top to bottom.
STEPS TO REPRODUCE
1. Right click on a titlebar
2. Move the cursor over the items of the context menu
A hovered item shows highlighting. Normally it vanishes once the cursor leaves the item, but it instead it stays.
Highlight only the current hovered item.
Operating System: openSUSE Tumbleweed 20220703
KDE Plasma Version: 5.25.2
KDE Frameworks Version: 5.95.0
Qt Version: 5.15.5
Kernel Version: 5.18.6-1-default (64-bit)
Graphics Platform: Wayland
Graphics Processor: AMD Radeon RX 580 Series
I cannot reproduce. Can you confirm if you have any scaling?
Created attachment 150412 [details]
kWin Support Info (5.525.2)
I use a mixed scaling: 1x and 2x. The issue happens for windows on both screens for me.
> I use a mixed scaling: 1x and 2x. The issue happens for windows on both screens for me.
Changed both screens temporarily to scale with a factor of 1, but the issue remained.
If I set menus to be completely opaque in application style -> breeze -> transparency, this doesn't happen anymore
(In reply to Zamundaaa from comment #4)
> If I set menus to be completely opaque in application style -> breeze ->
> transparency, this doesn't happen anymore
Can confirm, but actually it still happens: If you look very closely, the more opaque you set, the less it becomes visible, until it practically disappears at full opacity.
*** This bug has been marked as a duplicate of bug 437062 ***