I first noticed the bug after transporting a camel several thousand blocks. Got it to our base and then got kicked. I relogged and I had been moved back, the camel was gone (though it may have just wandered away from where we got moved to), and all items I had gathered since that point had gone back to the chest that they were in. I thought it was a one off thing until my friends and I were on and got kicked again. The same thing happened to all of us. It has happened several times. I have even noticed that a player doesn't have to be online for it to happen. Logged on this morning and noticed that several items in my inventory were gone.

Next time it happens I will get a screenshot