I set up a server to play
with my brother who is on the same network. I died and I believe I was
spawned on a new map. The reasons I think this is because I searched
for an hour and didn't find anything identifiable. I downloaded
minecraft cartographer and didn't recognize anything. And on my old map
there was lots of snow. On this map there is zero snow. When my
brother signs in he is still on the old map. I tried signing in on my
computer with his name and he's still on the old map. Whenever I sign
in on my name I'm on the new map.