User blog comment:MicaSmash/New Bugs Came to MC:PE/@comment-25014034-20160516153846/@comment-27428469-20160517105250

Yeah, it is weird. And the funny thing is, the duplicating bug only happens to players who JOIN a LAN world, in their own worlds, it doesn't happen to them. The same thing happened to my brother when he came into one of my worlds, too. So it only happens to people who join, not the owner of the world. So basically speaking, there are bugs in the multiplayer codes.