I confirm this behavior with fr_FR.UTF-8 locale.^ is a pretty common character to type in a terminal for anyone who manipulates regular expressions...
Some more information: - I use a plain X session, no desktop environment - The problem happens with all applicationsIt seems IBus 1.5.32 brings some changes targeted at Wayland/GTK4 which seem to not play well with plain X sessions and/or non-GTK applications (see #1098946).
Regards, -- Raphaël Halimi