When going to the nether or a bit far from spawn place, this message received. And after restarting many, MANY things are not saved. Even if 30 mins ago tied my horse, after this bug there is no horse. Many material in the inventory are missing, if you were building recently - no materials and no builds! And this only after update came here.  

After new update there are like few fixed bugs(now when going to the nether everything is okay) but bug is still there! I was trying to go to the End City. Going through portal - message received.So, bug is not fixed.