I was running vota and killing off an elite pack, and just as we're done i notice a goblin at the corner of my screen, already opening his portal!
i tempest rush over there as fast as i can... he's jumping! im not gonna make it!
then, a satisfactory grunt from the chap and a burst of coins tells me i DID make it. I sigh in relief and proceed to click on-
what? where'd he go?! did i NOT make it? but i heard-
I hear him running, and 1 coin drops start falling out of thin air in a trail. i follow it to a corner where it stops. i drop bells without mercy on the phantom goblin and out of thin air comes burst after burst of gold until the invisible goblin finally succumbs and drops his loot all over the floor.
its a good thing the loot wasn't invisible.
Probably just a bug, but interesting enough. So apparently if u catch the goblin late enough in his animation (it cant be his final escape, of course) only his corporeal body escapes but u get to chase down and beat up his soul.