47820, Steam, Windows 10
So upon entering a ranked game today, I switched keyboard input method (from Chinese to English) and then the game does not respond to my key presses and clicks. This happened to me twice already in ranked games. And a lot of times in mod manager, all after I switched input language.
To reproduce this bug, try to type Chinese with Microsoft Pinyin in game (chat or mod manager, etc.). You will surely catch it with enough tries.
Note that this bug makes chatting in-game using Chinese impossible.