More details here: https://bugs.kde.org/show_bug.cgi?id=379930
Yeah, killing input method is not a great idea, not to mention ibus is not the only one messing with keyboard layout. If people really want to know what's messing around I'd rather check the input method's dbus name and throw a warning.
Eike, next time you commit patches from contributors, please use the --author option in git commit to give proper attribution. Additionally, a bug number was given, but BUG: keyword was missing in the commit message.