I was playing with my friend on duos and I chose to switch my board with his. We were playing murlocs. He had Bassigil, which summons a murloc from your hand, but on his screen (the real fight that the game thought was correct) did not spawn what I had in hand.
I think it has something to do with how the game processes copying his murloc on my board but not also his murloc from his hand. The game probably registers his murloc already on the bassgil and not on mine. I dont know how to post the game but I will probably link a video to the problem in reply to this.