split aces payout weird

I got into a weird spot at the casino last night on a blackjack table. Hit a pair of aces, so I split them like always. First ace gets a 9 for 20, stand, dealer pays even money, fine. But on the second ace, I pull a face card, same thing, 21, but they didn’t pay me the usual. Pit boss says after splitting aces, the payout is 1,1, not 3,2, because you can only draw one card per hand. I know the one-card rule is pretty standard after a split but even money payout? I’ve never run into that.

It felt off, but nobody else at the table seemed to notice or care. Usually in these spots, if you make 21 with a split ace and ten, it’s still just a regular 21, not a blackjack, so 1,1 makes sense. But does every house do this or did I just get unlucky with some weird local rule? I’m wondering how common this even money payout is for split aces and if anyone else has run into this at other casinos?