I forgot that we don't have /tp, /home, /back and forgot to change it back when I remembered that there is no teleportation aside from portal guns. It was on my vanilla server when people were spamming /home and /back so they could just fight someone, go home to eat a golden apple, then pop back and kill more people. Or they would try to move their house thousands of blocks away and it lagged the server when they would teleport back and forth too quickly. You can change that back to 0 if you like.