The user data folder is managed by Godot. We only used "user://". Please report this to Godot Engine instead.
Viewing post in Lavakinemat Inc. jam comments
It's only with your game though, I don't have the source so I can't figure out what is going on and check if it's engine or a config problem.
Might be an idea for you setup a virtual Windows environment for testing?
*edit* Also I posted it here so other people that are running Windows trying to delete their folders after checking out all jam games might be helped. ;)
*edit* It might just be the dot at the end in the name. It's definitely the dot at the end of the game name, easy fix is just to remove that from the game project name.
This bug has been fixed in the latest builds: https://aemetta-toasteater.itch.io/lavakinemat-inc/devlog/82123/fixes-to-windows...
Note that your progress will be lost if you don't copy the safe files manually.