I started off with a freshly instaalled Fedora KDE Live 34 and updated each release up to current rawhide (F37).
I noticed that after I updated from 35 to 36, the login screen was very weird.
1) The keyboard language layout in the login manager was reset to "af" (I assume because it is alphabetically first in the list). The actual layout was similar do English, I don't know if "af" is the same.
2) The "virtual keyboard" button does nothing
3) Attempting to change either the keyboard language layout or the window manager session (X11 / Wayland) opens up a selestable menu bar in the top left corner of the screen and the rest of the screen starts flickering. Additionally, selecting a different keyboard layout ("sk" in my case) does not actually change the used layout.
4) After logging off of a started session I end up on the text virtual terminal (probably number 2). Pressing Ctrl + Alt + F1 switches to a black screen with only mouse visible.
This issue was noticed on F36 and also on the current rawhide (F37), restarting a few times did not change anything.
Thanks, likely a dup of 2054016
*** This bug has been marked as a duplicate of bug 2054016 ***