Vanishing menus in KDE core components
Some context menus in my KDE installation show the following problem:
When the menu is opened it shows normally.
But as soon as I move the cursor over the menu, it becomes transparent and whatever is behind it appears again, just the border stays.
When I move the cursor over the entries in the invisible menu, they reappear.
(everything except the divider line with Profile is back)
I can use the menus, it's just a nuisance I would like to get rid off.
This seems to only apply to QT components, but it doesn't behave that way in all menus.
- context menus in Dolphin for example are
finesometimes affected - the output device selection is affected
- the shutdown menu in the application starter menu is affected
- non QT components are fine
Installed versions:
- Debian 12.8 (bookworm)
- KDE Plasma version: 5.27.5
- KDE-Frameworks version: 5.103.0
- QT version: 5.15.8
- Kernel version: 6.11.5
- Graphics adapter: Intel UHD Graphics 620
- Graphics platform: Wayland
I'd prefer to use the packages shipped by the OS instead of installing another KDE version via third party repositories or even compile it myself. Maybe someone ran into this issue as well and found a way to fix it.
1 answer
Turns out this is a known bug in QT 5 that has been fixed in QT 6.
It only happens in the following constellation, which I hit exactly:
- Wayland
- Two or more screens
- different scaling per screen
Sadly, Debian 13 will supposedly still ship with KDE Plasma 5.27, and there are no plans to backport the fix to QT 5, so I guess I'm going to be stuck with this bug for at least the next three years.
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