SUMMARY When quickly hovering over applets that have tooltips of varying sizes (for instance, the media applet and the network manager applet), the tooltip is displayed with a glitched background. Some examples: (https://i.imgur.com/qURYgsZ.png) and (https://i.imgur.com/Id787xC.png). STEPS TO REPRODUCE 1. Hover over an applet in a panel until its tooltip appears. 2. Quickly switch between applets 3. If you do it fast enough and for about 10 seconds, you should be able to reproduce it. OBSERVED RESULT Tooltips for applets get messed up if quickly switching between ones with varying sizes. EXPECTED RESULT Tooltips render consistently. SOFTWARE/OS VERSIONS Linux/KDE Plasma: 5.16.0-arch1-1 KDE Plasma Version: 5.23.90 KDE Frameworks Version: 5.90.0 Qt Version: 5.15.2 ADDITIONAL INFORMATION I haven't used X11 in a few months but I never experienced the issue on the X11 session as late as Plasma 5.22.
*** This bug has been marked as a duplicate of bug 416048 ***