pandasecret1

Whenever I join a multiplayer server with no other mods enabled, other players randomly disappear and after a few seconds reappear (to wherever they went) whenever I see them, making pvp and parties really difficult. What can I do to fix this? Yes, I have the latest forge loader, I believe, if not, please add the adfly link please, because I don't know which one to use. Thanks, pandasecret1