Overview/Thumbnail image missing in Claudia

[clavinet]

Operating System: openSUSE Tumbleweed 20211210
KDE Plasma Version: 5.23.4
KDE Frameworks Version: 5.88.0
Qt Version: 5.15.2
Kernel Version: 5.15.6-1-default (64-bit)
Graphics Platform: X11

I'm using the official distro package from Tumbleweed:
https://build.opensuse.org/package/show/openSUSE%3AFactory/Cadence

The overview image in the bottom left disappeared a while ago.
It's still operable (dragging around the overview/thumbnail area also drags the main area), but I can't see it.