I left the game in my world, then I joined back in about 30 minutes later to find that I had died. I dont know how this is possible, because I had really good armor that would be able to help me survive for the few seconds that I would be joining, and no death message came up, I just respawned at my last spawn point. I went back to the area and I saw lots of exp on the ground where I died, I got back 7 levels which is what I get normally when I die with around 30 levels