When I press multimedia keys like volume up/down/mute, the OSD is shown as a tiny rectangle. I have a dual monitor setup. I suspect that this happens after switching monitors. Reproducible: Sometimes
Created attachment 99022 [details] screenshot of the situation
$ rpm -q plasma5-session plasma5-workspace plasma-framework kmix plasma5-session-5.6.3-1.1.noarch plasma5-workspace-5.6.3-1.1.x86_64 plasma-framework-5.21.0-1.2.x86_64 kmix-15.12.3-1.2.x86_64
Thank you for reporting this bug in KDE software. As it has been a while since this issue was reported, can we please ask you to see if you can reproduce the issue with a recent software version? If you can reproduce the issue, please change the status to "CONFIRMED" when replying. Thank you!
I haven't seen it for years likely.