I still don’t know bug this or not.
If you cast betrayal to opponent who wear mindlathe after they counterattack their minions, minions will be reactivated and becomes yours. I have a replay to show that:
Its happend at the end of the game, so skip most to it.
https://play.duelyst.com/replay?replayId=-L2yy6CpOl9iQMHYshvh
So i want to know bug it is or not.