This bug doesn't belong here.
I found out, that this is most probably a problem with the switching
mechanism between intel and nvidia drivers, which doesn't seem to do its
job fully under certain conditions. What was causing gnome-shell to do
what it was doing was actually some strange bug that
Also, please collect a full system log from immediately after the
problem has occurred:
journalctl -b > journal.txt
and attach the resulting file 'journal.txt' here.
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