The devs have to juggle developing future content, all bug fixes, and many other tasks. Sometimes that one bug may just be a lower priority than something else that is being worked on, and this includes coming from PTS.
Not trying to rain on your parade here Eric, but it seems some of the most broken issues that is considered "game-breaking" to many tend to take that backseat of "low priority" when it comes to the "time of fix", which is really discouraging.
ie; Bolster (3 months), undermanned WZ's (for 2 weeks - which is a long time with this issue, which isn't fully resolved
Just a thought.