@OP and 'Little Mouse', I have a big concern here. If anyone change this settings (unmarked), then his name disappears from the leaderboard.
It wasn't same before the last update. If someone applied this, an username "hidden" would be there. See Magakaisa have this from the beginning and their username is hidden #11
Don't know why it's not working as the way for invalid. I'll check with the team.
From what I have seen last time, roycilik had more than $65k wagered. That's a huge one.