Hi,
Thank you for reporting this. It is very strange.
Searching on internet it seems it is a problem related to the PC. Unfortunately, as you said the build is made only for Windows OS.
Are you using the Itch.io Desktop App to launch the game or you are just downloading it as it is. In case I suggest you use the app, it is easier also to receive the different patches for all the game you have downloaded. I don't know but maybe with the app, your problem could resolve by itself.
Anyway, thank you for sharing this problem.