I don’t if anyone else experienced it but I had a game where I had Spirit of the Shark on board (no stealth). I decided to shadowstep it to prevent it from dying. On my turn back I played the Spirit and played Eviscerate expecting to deal 8 damage but the animation only happened once and dealt 4 damage only.
Eviscerate is not a minion.
In future searching first can save you the embarrassment of duplicate non-bug threads.