At first I could switch to it, the ibus icon would show the anthy icon but it would do nothing. After a restart of the system it would not even switch to it's icon. The other bug with ibus was that I could not use it on all applications. So I switched to fcitx and completely uninstalled ibus. For testing purposes I installed it again, restarted the system, quit fcitx, started ibus and this time ibus did not work at all. That's all I did. Ibus also would close if I closed the preferences window, after installing it the second time. Fcitx is working well but ibus is much more practical, it requires less user input to activate, easier to switch languages and more predictable.