In current branched Fedora 39 (and Rawhide I assume) by default it is not possible to leave ibus-anthy with Super+Space. Instead it is captured by ibus-anthy. ibus-libpinyin seems okay so I assumed this is a problem with the Anthy IME? Reproducible: Always Steps to Reproduce: 1. add Anthy IME 2. Switch to Anthy with Super+Space 3. Try to switch away from Anthy with Super+Space Actual Results: 3. Space characters inserted Expected Results: 3. Switch back to other IME/Input Source On the other hand ibus-anthy is unchanged since F38... So might be this is an issue with ibus or another component??
(Also tested okay with ibus-m17n)