STEPS TO REPRODUCE
1. Simply reboot/shutdown under any condition
2. Screen becomes blank with cursor for 5 - 8 seconds before proceeding to reboot/shutdown normally
Screen becomes blank with cursor for 5 - 8 seconds after hitting shutdown or restart.
Plasma to shutdown or reboot immediately without delays to exiting the desktop.
Linux/KDE Plasma: OpenSUSE Tumbleweed 20210817
(available in About System)
KDE Plasma Version: 5.22.4
KDE Frameworks Version: 5.85.0
Qt Version: 5.15.2
May be related to this bug but it is possible that they are unrelated: https://bugs.kde.org/show_bug.cgi?id=423371
I've included a video attachment of the aforementioned behaviour.
Bug attached https://youtu.be/ZLza4f7h8AQ
*** This bug has been marked as a duplicate of bug 432643 ***