I have a strange problem that I've observed using GNU Emacs 28.1 on gnome + arch linux. I have a commands bound in my
C-., which I wrote a long time ago to jog up and down the buffer.
Recently (at least a year) I noticed that
C-, still works but
C-. doesn't. Instead, when I press
C-. I get a weird contextual cursor that I've never seen before. It looks like a tooltip and has the letter 'e'. see screenshot:
If I type, the typing gets added to the bubble:
If I press escape it goes away. I don't know what this is but I've only seen it in emacs. When I press
C-h k to describe-key and then enter
C-., the same phenomenon occurs.
It seems like the key is getting captured before emacs interprets it- but there is definitely no keybinding at the desktop level- I've checked. Nothing happens in any other app.
Any idea what is going on?