That's how I ended up with only one saved file too. I tried the troubleshooting to delete the campaign it creates after the bug started.
A few other bugs I noticed that started around the same time:
•Wyll has a dialogue exclamation that doesn't go away after speaking to him. Dismissing him doesn't work and neither does talking to anyone else.
•My wife and I play PS5 couch co-op. We've been having trouble with the camp chests where I, the second player, can't access my chest. If I disconnect then she can access all chests even using my toon.
•The game has been freezing and the screen will get stuck for 45~ seconds until the crash reporter comes up.
