Uh, that might be it
Well, nice and unexpected touch there.
But a REAL JJ bug - Chaos Avatar doesn't remove poison and mana burn for the goat. I assume it's assumed the level up would automaticaly clear them, but it doesn't for obvious reasons.
And Darvin pointed out that we're not sure if taking petition and converting out still lets you keep the petition. It probably should.
EDIT: Gameplay kink - Cursed Oasis shifts you between gods in the spirit world, but seems to only transfer the altar you are worshiping at the first time you get cursed. It's fine with everybody else, but for the goat, it just means you get locked out of boons once you level up.