Ubuntu – My IBus pinyin broke with 14.04 release upgrade

I've just upgraded to 14.04 and I've got a problem with IBus pinyin input. While it is very-very nice that now I have a little floating panel on which I can switch between simplified and traditional characters, full/half width, and can reach the IBus Preferences; the pinyin dictionary seems to have broken. E.g. I can't even type such simple expressions like "ni hao" and "xie xie". Actually, I can't even type the "hao" (good) character alone, because "ha" (laughter) appears.

Probably I just have a problem with my settings, but I couldn't figure out what is it.
Does anyone have an idea how to fix this problem?