That's not a dealbreaking bug for me, but I still hope that someday I'll be able to use my English keyboard after I launch Dishonored (via steam). I see my language panel (I use Win7, btw), can change languages, but English letters do not work. It says "En", but I still type in Russian. That's not very convenient. English comes back only after full system reload.
That's not only me - it's actually a pretty popular problem.
The same is true for another Arcane title - The Dark Messiah of Might and Magick - by the way.
Upd: т_т Oh. and "disappears" of course, maybe I'm better off without English in the end.