I have posted 2 bug reports on this issue on your Discord server, and neither were answered. My issue is that I took my laptop to a place a few months ago and I was able to boot into Bazzite and log in, but once I logged in and KDE Plasma loaded, it promptly dissappeared, came back up, and dissappeared again, leaving me with a black screen with a cursor. I continued to try on different days on both X11 and Wayland and both had the same problem. After a few months I brought it back and I was able to use it, but after I shut it off for a few hours and returned, the same time happened. It works perfectly fine at my house.
This happened on both Bazzite 43 and 44 for me