I'm experiencing a bug with this game. If I swap focus away from this game (such as by using Alt-Tab, clicking another window while the game is in windowed mode, or changing virtual desktops) and then focus the game again, the game becomes unresponsive to input; the game has to be closed and then reopened before it can function again.
From my understanding, this is a common bug in games coded using Unity, and I think it involves the need to handle the API hook for the game's focus returning or something like that. In case it's relevant, I'm playing this game on Linux using Itch's desktop client for Linux (which is able to run Windows games through the use of the Wine compatibility layer).