Manual saves have read and write permissions.
Automatic saves have all permissions, read, and execute, like the steam_autocloud.vdf file and Windows game saves.
What I expected?
Save files should have all only read and write permission, so automatic saves should do like manual saves. But at the very least, I would expect consistency between the two types of save files.
Thanks for the report however the game does not differentiate between auto save and manual save for permissions logic. It simply preserves what ever permissions were already there when overwriting or creating save files.
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