From time to time I get logged out from my Fedora GNOME while I am doing stuff. I haven’t been able to pin point the problem, yet. I always use a bunch of browsers, LogSeq program, Thunderbird, Telegram and not much else.
I have a suspect that the random log-out is caused by some component crashing, probably due to the Ferdium program. Still I can’t find logs that say that Ferdium is the source of this.
As soon as I log back in, I open the Logs app and read the logs but really I can’t understand much.
You can check the list of latest crashes with coredumpctl list. With coredumpctl info you can see the details of the latest crash, and with coredumpctl info <pid> the details of a specific crash (replace <pid> with the id of the process).
If the crash is gnome-shell itself, then in the Stack trace you might see which component is causing it.