I was playing a game where I had Ashes of the Abhorrent on the field and my opponent was playing a Brawl deck with Muldrotha, the Gravetide (as the alternate version "Orphan, Cocoon Fal'cie") as their commander. Ashes of the Abhorrent should have prevented my opponent from casting permanent spells from their graveyard using Muldrotha's ability, but once they played Muldrotha, their turn showed that they could cast the full range of permanents from their graveyard, and they used that to cast an enchantment from their graveyard that destroyed Ashes of the Abhorrent. No other effects on the field allowed them to pull that enchantment out of their graveyard. They were also playing lands from their graveyard, which Ashes of the Abhorrent would have had no effect on, so it could be possible that something got mixed up in the game's rulings that allowed both parts of the graveyard ability instead of just the one.