SUMMARY STEPS TO REPRODUCE 1. Switch to Wayland; 2. Click on a pinned item of the taskbar. OBSERVED RESULT The pressed state, to indicate that the click was registered, won't show. EXPECTED RESULT SOFTWARE/OS VERSIONS Operating System: Kubuntu 21.04 KDE Plasma Version: 5.21.4 KDE Frameworks Version: 5.80.0 Qt Version: 5.15.2 Kernel Version: 5.11.0-17-generic OS Type: 64-bit Graphics Platform: Wayland Processors: 8 × Intel® Core™ i5-8265U CPU @ 1.60GHz Memory: 15,5 GiB of RAM Graphics Processor: Mesa Intel® UHD Graphics 620 ADDITIONAL INFORMATION This happens in both icons-only task manager/task manager.
Also, this isn't a theme issue, because I tested with Breeze plasma theme.
I forgot to mention: the pinned app should be closed before clicking.
*** This bug has been marked as a duplicate of bug 402903 ***