https://bugs.winehq.org/show_bug.cgi?id=43073
--- Comment #5 from anton.sudak@gmail.com --- Few additions to my previous comment. I've tried some other non-latin keyboard layouts like Greek and Japanese (kana), and got similar result. In these two cases question marks appeared in input fields instead. So issue is broader than described initially. Input works correctly in launcher, so issue left only in-game. Tested on Proton Experimental. Unfortunatelly unable to test with latest wine release because license is tied to steam.