There is now a hotfix available for RU and PL only:
http://bit.ly/Va29DNSimply extract these files in the root of your installation folder (overwrite the previous files).
This fixes the input for Russian characters.
The incorrect level of characters is however not that easy to fix and will most likely not get patched any time soon. We've had programmers look at this particular issue and it goes quite deep into data and code, which is the reason why we cannot provide you with a quick or easy fix.
We apologize for any inconvenience this causes. Although this is a serious issue, we hope it does not destroy the game experience for you.