Bug: Flavor void elementals at Manaforge Ultris do not move through the intended "tube"

[Russet0]

There is a series of untargetable mobs at Manaforge Ultris in Netherstorm [60.2, 41.6] which are some kind of void elemental similar to the surrounding mobs that are killed for a quest.

These mobs are not supposed to be killed or targeted, but they are supposed to "form" at the beginning of a tube that is attached to the manaforge and then proceed slowly through the tube outward and down.

However, they seem to get stuck where their spawn point is and do not move.

Screenshot of current behavior: http://i.imgur.com/NUtHpUN.png

[Russet0]

Similar behavior is observed at all 4 "tubes" exiting Manaforge Ultris (North, South, East, and West).

Also there seem to be random spawns of these units outside of their intended tubes (just static on the ground below their intended paths).

[AnonXS]

I just removed some of them today, as suggested by TrinityCore. other than that they are just visuals.

[Russet0]

Yea that's why I try to specify that they are just "flavor" units. Not a huge deal but might as well get it recorded so that it can be fixed eventually. For documentation's sake.