v2.3.8:

Sacrificing at a black altar with a chaotic character - after two successful pre-crownings - causes the piety reporting text stuck at "Ni'Pregh seems to be very close to you".

Then suddenly praying to Ni'Pregh at the statue "Aut viam inveniam aut faciam": he announces, he has crowned me champion. Then reloading the game the crowning works anywhere, but the altar sacrifice text is stuck at "Ni'Pregh seems to be very close to you".

Sacrificing the Obsidian Amulet - crowning gift - doesn't anger the god at all..