Unfortunately, IBus provides a "less than optimal" (to say the least) UX for Hong Kongers.
I'm hopeful we'll get this fixed before GNOME 3.6 is released, which should make it a great Free Software OS for Hong Kong people too.
Of course, there are other bugs and deficiencies in IBus (as in every software really) which will remain after this one is fixed and which make for a user experience poorer than it should be (for example, the Cangjie IM doesn't support wildcards, neither Cangjie nor Quick adapt to the most frequently used words by the user, etc...). But those are all details which will improve the user experience, whereas the one I linked above really just makes IBus useless in Hong Kong.
I'm very excited for GNOME 3.6, and specifically because it will be the first GNOME release we will be able to recommend to everyone here, not just tinkerers and geeks, but really anyone, no matter what language they write.