SUMMARY On Wayland, the icon-only task manager preview shows a black screen for some applications, specifically firefox and thunderbird. It seems to work erratically as well - I am pretty sure firefox occasionally works if you keep the focus on the taskbar icon long enough. Operating System: Arch Linux KDE Plasma Version: 5.20.3 KDE Frameworks Version: 5.76.0 Qt Version: 5.15.2 Kernel Version: 5.10.0-rc2-next-20201106-1-next-git OS Type: 64-bit Processors: 16 × AMD Ryzen 7 3700X 8-Core Processor Memory: 31.3 GiB of RAM Graphics Processor: AMD Radeon RX 5700 XT
*** This bug has been marked as a duplicate of bug 427826 ***