Pressing the Super key deletes the active syllable in ibus-hangul

[Silejonu]

Which distribution and version?:
Arch Linux / Fedora 34

Which desktop environment and version?:
GNOME 40.3.0

Which session type?:
Wayland and X11

Which application and version?:
Any

IBus version?:
1.5.24

Issue description:
Active syllable is being removed when hitting the Super key on GNOME. This is especially problematic as the default shortcut to switch input source is Super+Space, and as such, the last inputted syllable is constantly getting removed when switching to another layout.
Can not reproduce on elementary OS's Pantheon.

Steps to reproduce:

1. Type a word using ibus-hangul (ex: 한글 [ㅎ+ㅏ+ㄴ]+[ㄱ+ㅡ+ㄹ])
2. Press the Super key, alone or as part of a keyboard shortcut (ex: the default GNOME shortcut to switch input methods: Super+Space)
3. The syllable that's currently being inputted (in this example, 글) is deleted

Can you reproduce your problem when you restart ibus-daemon? (yes / no):
yes

Do you see any errors when you run ibus-daemon with the verbose option?:
no

Can you reproduce your problem with a new user account instead of the current your account? (yes / no):
yes