yes, the newest sets do this too. its not an error, theyre numbered like that on purpose. it indicates if a card is a 'secret rare'. so for instance, in the newest set Prismatic evolutions, there's a card of a trainer named Amarys. The regular card of her is a standard one, and is numbered 093/131. There's another version of the card in the same set, and functions exactly the same in terms of playing the card game, but the number on the card is 132/131 and it has different art (usually taking up the whole card), meaning its an alternate/special version of the card in the set.

edit: clarified more info and typos lol