Yes I'm having this same issue, I just opened and sent a ticket to them hoping it gets resolved. At least 3 times my leaderboard stats reset when I've played over 50 or so games. Seems to happen for me when I get between 12 games, the game history is there and I'm on a 6 game win streak.
M
manalone1384-_MLBTS
@manalone1384-_MLBTS