the problem hits for long time, fedora 11+ibus18.104.22.16890927,
checked as a known bug on ibus engine, which should have been fixed in ibus1.3.5+ version,
when I checked out source code ibus-1.3.9, failed to continue for glib version,
Requested 'glib-2.0 >= 2.26.0' but version of GLib is 2.20.5
also seems no patch into the old ibus version, but I’ve no intension to move onto newer kernel platform, considering to adopt fictx.