I been having problems with my realm for the past few days after the 1.12 update. 

When I tried to get in my realm it refused to go past the "loading terrain" screen, so I exit out and tried to use the most recent backup file to reload the world. When I loaded in the world, everything was gone as if it was a brand new world, I went back and tried a more older backup file, same thing. Every single backup file is corrupted. 

I decided to use a copy of the realm to replace it, all seemed well. 

Second problem... If a member leaves and comes back, the world is erased and starts new for them even if there's other people on the realm, the people who are already on the realm still play as normal but don't get any notification that the other member came back. It's as if the realm split. As soon as a member leaves, it's erased for them. 

Please help!