https://bugs.winehq.org/show_bug.cgi?id=24860
--- Comment #8 from Dmitry Timoshkov dmitry@baikal.ru --- (In reply to Bruno Jesus from comment #7)
Interesting, I trusted comment 4 for the language. For me all text are sequences of accented vowels (eg áàäéëòíà) which I guess are some missing font problem.
Bulgarian like Russian uses cyrillic alphabet, so it's easy to get confused. In order to see cyrillic letters one needs to use appropriate locale: either bg_BG.UTF-8 as the Comment 2 indicates, or ru_RU.UTF-8 (which also works).