Possibly related, I also updated from 22.04 to 24.04 and in a Sway session, the compose key doesn't seem to work either, even though it is set via the gnome settings manager.
I always have to swaymsg 'input * xkb_options compose:menu' as described here, for me gnome settings never took any effect in sway.
I always have to
swaymsg 'input * xkb_options compose:menu'
as described here, for me gnome settings never took any effect in sway.Originally posted by @karlsebal in https://github.com/regolith-linux/regolith-desktop/issues/1025#issuecomment-2453410743