NPC Spawn Issue: Mobs returning to spawn point unable to be seen.

[h0tr0d (shaere)]

I have noticed a bug where mobs will return home (in my case after I FD) and upon reaching home, they vanish. They are still there, but I cannot see them, nor target them. If I run over to that spot/area or pull by it, they aggro and then become visible. I am unsure what causes this, it may be a z axis thing, or them falling through the floor or wall, or somehow being out of sync with this dimension..lol.

Example: Upon pulling King Tranix's room I successfully split off King Tranix and we kill him. I run back up for another pull and when I look in the room I only see one of the giants flanking his throne. When I pull by the spawn point where I do not see the giant, or run over to it, he aggros and upon running from that area he begins to chase and I now see him. I have seen this behavior in other zones mostly (because of raids and what zones I take my monk) Sebilis, the planes and soldungb.