Hunter: Selective breeder bug

I just played a casual game with player 悶絶ハゲちゃびん. They played 4 Selective breeder cards in their deck, 3 golden and 1 by turn 5. Seems like a bug to limit cards to 2 of each for this card was introduced with today’s launch.

And what did he play leading into this? Because card copy and card discovery are a thing.

Yeah if he had played something to that effect then I wouldnt have taken a second thought, it was 4 of them in a row to get the 1/1 boars. The only thing he copied was the boars