ibus-hangul is missing Hanja conversion. This is pretty important...
Please match the expected hotkeys of popular Hangul IM software for both Korean native and US-International keyboards.
I have built the HEAD version ibus-hangul in http://github.com/choehwanjin/ibus-hangul/tree/master.
I think it has implemented some features. Maybe it resolved this bug. Please try it.
Confirmed with the upstream maintainer. This feature has been implemented.
Please try ibus-hangul-220.127.116.1190328-1.fc11