Missing 'last glowie' marker

[srmalloy]

In the third mission of Heather Townsend's arc -- "Investigate the Tsoo" -- if you have already tagged the first two items of the three the mission requires you to look for, and the Ancestral Warden spawns in the 'front room' of the last chamber, after defeating the Ancestral Warden and the spawn with him, the map marker for the final glowie does not appear. If the Ancestral Warden spawns in the back room (or any mob in his spawn does), the glowie marker appears normally.