Bug: Apu's Kitchen Finks loop

Hi,
I am very new to this game and having alot of fun. But I found a bug in the quest mode against very hard Apu. He plays his combo with the Kitchen Finks and his enchantment/artifact and sacrifice his Kitchen Finks multipile times. But the Kitchen Finks don't get -1/-1 from the Persist ability. So he can make it 20 times till I am dead. Anything I can do to fix it?
I am very new to this game and having alot of fun. But I found a bug in the quest mode against very hard Apu. He plays his combo with the Kitchen Finks and his enchantment/artifact and sacrifice his Kitchen Finks multipile times. But the Kitchen Finks don't get -1/-1 from the Persist ability. So he can make it 20 times till I am dead. Anything I can do to fix it?