End Portal causes player to fall from high place when reentering overworld

We went to the end before the candles patch and it was fine but after we updated it killed us every time. Our stuff was nowhere to be see but we did get some of our XP back. Sometimes when we died it would actually ask to respawn but would load forever. 

I think this is a pretty serious bug because we lost a decent amount of stuff and it is very hard to use the end until this is fixed.