Hello. What do you mean via Ren'Py launcher? Are you playing with the official Ren'Py engine attempting to launch the game?
If so, don't do this. The reason why you're getting a bug here most likely is because you're playing with a newer version of Ren'Py (8.2.0) than the actual version the game was optimized for (8.1.3). You'll get bugs by doing this as you found.
Use the official Itch App to launch your game:
https://itch.io/app
Or go into the downloaded folder of the game and execute the file that launches the game.