slot provider check holding only one winning spin while all losing spins settled fine.

Had something weird happen to me this morning with a well-known slot provider. I had a run of spins, most of them losses as usual, but there was one solid win that didn't get paid out right away. The funny part is all the losing spins settled instantly and showed up in my game history like nothing was wrong. Only that one winning spin ended up marked as “pending” or “under review” or whatever they call it now.

I know sometimes they flag bonus rounds or suspicious patterns, but this was just a regular spin in the base game and wasn’t even huge, just bigger than my stake by a bit. Has anyone had a slot provider hold up just a single spin before, especially when all the others process fine? Not sure if it’s a legit glitch or if they're getting pickier when it comes to payouts. Anyone else run into this?