When I enter a world and after a period of time I'm kicked out and things go missing.

When I go into a world, survival or creative, after a period of time I get booted from the game. I am kicked out of the app. When I log back in some blocks are missing and they are not in my inventory, mobs despawn, one of my name tagged mobs disappeared. This happened only once on a server and not at all on a world my friend owned. We have been on my friends world for a few days and nothing was out of the ordinary. This has only stated happening after the most recent update, when I got the update I was l also logged out of my account for some reason.