Maven spectates Uber Elder when Shaper and Elder both witnessed

Self explanatory from the title. When the Maven has already witnessed any other boss she will not witness future attempts. You receive no benefit from her witnessing the Uber Elder fight if she has already witnessed Shaper and Elder; it makes the fight significantly harder with no upside.

Yes, I know you can turn Maven off manually. I assumed it would do so automatically because that's how it works for every other fight in the game.