https://bugs.winehq.org/show_bug.cgi?id=38136
--- Comment #1 from Béla Gyebrószki gyebro69@gmail.com --- An addition: the number of missing letters varies between runs. Sometimes only 2-3 letters are missing, the next time I start the game almost 50% of the letters are missing.
The patch which fixes the issue for me: https://github.com/stefand/wine/commit/462ee1d1632fd33c14e6929aa6bc545d1400a...
wine-1.7.43-25-g0d91274 Nvidia binary drivers 340.76