I was attacking a team with Mother Winter and Buddy in the last round of a tournament. Whenever I killed a hero with a minion, there minion didn’t die. Then Mother Winter would respawn various heroes and new minions would appear. No matter how many heroes or minions I killed, more just kept popping up and be indestructible. I was dropped from the tournament because if that attack.
Welcome to the forum. Are you sure wasn’t just a visual bug and the minions turned red? Because this is a known issue -> [KNOWN ISSUE] Minions not disappearing (visual bug)
They kept attacking and blocking, so it wasn’t just a color change.