Invisible Treant complicates Quill Spawning
 

There is a Treant that spawns as part of the Quillmane trigger group. It spawns just east of Splitpaw and appears to remain stationary for 30-40 seconds. It can be targeted, but not hit/shot/cast upon and then it disappears. Based on tracking it appears to then start moving north, but isn't able to be seen/shot (pathing under the map?).

When it reaches the centaurs it stops and turns around. At this point it reappears and can be engaged.

This bug is adding a level of complexity to an already complex triggering mechanism.