Hello maintainers of KDE,

After installing KDE fresh from a netinst image
https://get.debian.org/images/.trixie_di_alpha1/debian-cd/amd64/iso-cd/debian-trixie-DI-alpha1-amd64-netinst.iso
the preview of the window shows garbled content.

To reproduce:
* Install KDE fresh from the netinst image (or use a recent live image)
* Start a program (e.g. kmousetool)
* While the program is running, move the mouse to the task bar and hover
over the kmousetool icon
* A preview window is shown with garbled content, see attachment

With kind regards,
Roland Clobus

[netinst]
https://get.debian.org/images/.trixie_di_alpha1/debian-cd/amd64/iso-cd/debian-trixie-DI-alpha1-amd64-netinst.iso
[live]
https://get.debian.org/images/weekly-live-builds/amd64/iso-hybrid/debian-live-testing-amd64-kde.iso