» Tue Dec 13, 2011 1:51 am
It has happened to me before. I also killed one in 1 sneak attack, but it didn't die on the spot. It flew up for a few seconds, then crashed landed on the ground.
But I did get the soul. Killing a dragon in this manner does not prevent you from getting the soul.
The one that you killed just happened to be a bugged one that won't give you a soul. Meaning even if you killed that specific one in open-combat, you still won't get the soul. Try it.