I know this is a bit of a strange solution, and this isn't guaranteed to work for everyone, but this method managed to solve the save data issue for a user named 'Lixunis' on the Freddit Discord server.

I'll continue to look into a proper fix for this issue sometime in the future, but for now this could be worth a shot to try.

If anyone experiencing issues with save data not working could provide their computer's hardware specs, that would be greatly appreciated!