I was playing the Sneak Squad deck.
Several things were wrong in this match but I only captured this one. I purposely let my creature die to put the hurt on their creature, then tried to play Covert Cutpurse. It should have destroyed the other creature which was a 5/1 after the damage but instead it did not. Covert Cutpurse was transformed. I took a screenshot ot the board afterward. a turn or two before that I played Psychic Pickpocket. It did connive but did not return anything to the owners hand, it did not even offer to. I resigned after this, why bother playing a broken game?