STEPS TO REPRODUCE 1. Lock a session 2. Unlock 3. Enter your password to unlock OBSERVED RESULT The session unlocks and immediately afterwards another windowed lockscreen appears, but the session is already unlocked and you can easily close this second lockscreen like any other app. EXPECTED RESULT Your session unlocks SOFTWARE/OS VERSIONS KDE Plasma Version: 5.21 Beta KDE Frameworks Version: 5.78 Qt Version: 5.15.2 ADDITIONAL INFORMATION Tested on Wayland, also I should note that the new Systemd startup is enabled.
I also noticed that a lockscreen would randomly appear during normal system operation.
*** This bug has been marked as a duplicate of bug 432189 ***