In the sandbox environment of Game Center I tested with 2 different users. Unfortunately I only see one player in the leader board. Only the player who is logged in.
I thought it should update after a while but now (24 hours later) I still only see one user in the leader board.
Is this correct in the sandbox environment?
Obviously it takes more than 24 hours to update the leader board.
After +/- 48 hours, the other user also disappeared in the Game Center Leaderboard.