My ibus configuration has Next Engine shortcuts defined because I began using it before it became disabled by default in a later update for non-Chinese languages.
Quite often I accidentally activate the IM by hitting Ctrl-Shift. I tried to delete the Next Engine hotkeys from the ibus Preferences menu, but deleting those hotkeys fails to stay deleted.
Please fix for F-10 and F-11.
IIUC this is already fixed in rawhide/f11beta so I think this should be taken off the f11blocker list.
This problem has been fixed in upstream. I will build new version later.
fixed in 1_1_0_20090311-2