[BUG] Unstable Warp Rift Generator

[Cetanu]

http://www.wowhead.com/?item=29027
It spawns this NPC http://www.wowhead.com/?npc=20143
That continually summons http://www.wowhead.com/?npc=20145 at about 30 second intervals.
It can be spawned more than once.
It doesn't seem to despawn.
I didn't get to test but I think it should be tested outside of the questing zone.
If this is usable anywhere this can be a bigger problem.

I believe the summoning NPC should have a SET place where it spawns the voids. And not be visible. I kind of remember that's how it was on retail. The voids got spawned in certain places. But Iunno if it spawned them that quickly. Or if the item made it activate.
Retail testing needed? ><