I found the same problem.
I think it is some kind of problem with database update. The last 3 times I tried to update I got an error: "backend fetch failed" or something like that. Now I don't know what version is really there and whether I should update again or not.
Sometimes it can be a matter of cache and intermediate storage.
I guess the main problem is that OS (hosting) is currently overloaded and can't handle the traffic correctly.