Problem With My Highest Rating

I have a rating of 542 in blitz, but for 2 days now it's been saying my highest ever rating was 534.

I used to get that when for example my rating was 1000 after I played a game. Then sometime after that game I would get points added to my rating because chess.com sent a message saying that one of my recent opponents violated their fair play policy and chess.com gave me rating points for potentially unfair rating losses because that person possibly cheated.

After I play another game it goes back to normal.

As @PenguinChocolate said, this is typically because one of your recent opponents are caught cheating against you.

But it looks different this time because you just got your peak by winning a game, it looks like. I don't see anyone recently banned against you either, so this is kind of strange.