"Presence" doesn't appear to have parameters set for elevation differences

Either its a bug or just a mechanical oversight but it appears that presence effects don't play well at all with height.

I encountered this whilst using radiant grief vs the chimera but also had similar problems vs the colossus in act 2.

The helm refused to ignite gas clouds when i was next to the pillars that the chimera landed on, same with some portions of the colossus fight depending on his position.. I don't remember it being all for that one.