Yes, it still happens in safe mode. My abrowser (firefox derivative) is now at version 109.0+build1-0ubuntu0.22.04.1~mt1+11.0trisquel94. maiki, are you testing with Xorg? Can you try again with a newer browser now? I’m also on i3 window manager in case that will make any difference.
What I suggest is to document a way to edit these values without the javascript enhanced editor running. It still runs in safe mode, that would be a good time to disable it. Even if I had to edit a field in the discourse database, I’d be happier than I am with it now.