Anywhere along the top of the duel arena has no randoms still... The reason they do this is because their are unfixed bugs around duel arena, that you cant go very far outside the duel arena with. The type of teleport the randoms use when you don't talk to them wont reset many of these glitches like the magic carpet one, but a normal tele does. They are trying to keep the glitches confined to the duel arena.