Since a series of package updates last night (openSUSE Tumbleweed), certain icons in the system tray have a black box as their background instead of appearing transparent. Reproducible: Always I tried restarting, deleting ~/.cache/icon-cache.kcache, and running kbuildsycoca5... but nothing fixed the issue.
Created attachment 96989 [details] Screenshot
*** This bug has been marked as a duplicate of bug 356937 ***