https://bugzilla.redhat.com/show_bug.cgi?id=2076596
--- Comment #23 from fujiwara tfujiwar@redhat.com --- I created test packages to fix this issue. https://copr.fedorainfracloud.org/coprs/fujiwara/ibus/
Could you update ibus and install ibus-qt5 and test the XKB layouts in Plasma Wayland?