I didn't get level rollbacks, but I did lose my stash. I have to unlock it again and I assume it's gonna be empty if I do. I haven't done anything to it just in case.

Many people getting hit with this bug it shouldn't be a problem after the hotfix but may still occur. This bug i believe hasn't been addressed yet.

I lost my stash after latest hotfix as well. I have to unlock the stash-tabs too

Ran into the same issue here. Stash wants to be unlocked again.

Now i got kicked out of the game and another time my stash got reset.... not that i found alot but still there was a few nice things that i now lost again...