Guild Wars 2

So I thought I saw a Warrior yesterday use Vengeance from downed state in a 1v1 battle and I basically ran from him until it ran out, but it never ran out. He just stayed alive and I was forced to kill him again. I figured he had the trait or something to stay alive after a kill, but whatever.

Today, I was playing my Warrior, used Vengeance, and once again I did not die after 10 seconds. I do not have points in the trait to keep me alive, nor did I even get a kill. Something might be bugged with this skill and it should be checked out.

Vengeance has a small chance to go away when you kill something, there is a trait to make it 100% chance.