SUMMARY No windows title bar, no task bar, no Alt+tab after update to Plasma 5.20. STEPS TO REPRODUCE 1. Access in Plasma OBSERVED RESULT 1. Windows don't show title bar, so I cannot do any action on windows (move, resize, close, etc.) 2. Running apps don't appear on task bar. I cannot close running apps! 3. Alt+tab does nothing, no switch between open windows. All run right if I login in Wayland. EXPECTED RESULT SOFTWARE/OS VERSIONS Linux/KDE Neon: 5.20 KDE Plasma Version: 5.20 KDE Frameworks Version: 5.75.0 Qt Version: 5.15.0 ADDITIONAL INFORMATION
You should install kwin package
See https://blog.neon.kde.org/index.php/2020/10/13/kde-neon-5-20/ for more information.
(In reply to popov895 from comment #1) > You should install kwin package Thank you popov895, it goes.
*** Bug 427694 has been marked as a duplicate of this bug. ***