https://devforum.roblox.com/t/teleportpartyasync-only-transmits-join-data-for-one-player-playergetjoindata-returns-empty-for-all-but-one-player/255493
TeleportPartyAsync only transmits join data for one player. (Player:GetJoinData() returns empty for...
Mar 21, 2019 - When teleporting players using TeleportPartyAsync, Player:GetJoinData() returns an empty table for all players except one at the destination place. Repro steps...
for onejoindata