fanduel blackjack natural paid late after showing as push first.

Had this weird experience on blackjack yesterday. I hit a natural 21 and it looked like the game pushed me first, so my balance didn’t go up and I started taking screenshots. About a minute later I saw my winnings finally show up as a blackjack payout and my balance updated. Not sure if it’s just a glitch or something about how they process blackjacks vs. regular hands, but it kinda stressed me out for a sec. Makes me wonder if that ever happens for losses too and maybe you don’t notice as much?

Anyone else see this happen before? Just want to know if I should be more on top of keeping records when I play blackjack online.