So my friend and I are at my house together and we got on the same world together, but when I got on I noticed he had Alex's skin. This doesn't happen on servers, only together in a LAN world. So when we joined my world, for me, I had my skin but for him, I was Alex (Screenshot 1 is his world and Screenshot 2 is my world) I added a crash report just in case you need something from it.