Archer's Headshot Bug?

[Femme_Fatale]

I'm uncertain if this is a bug or an unintentional consequence of the design of Headshot.

Many times when I'm using Headshot against an enemy considered to be marked and the move forward during the same turn that I'm using Headshot on them, the Headshot won't even register. There isn't even a "you missed" log. It's as though the enemy is moving forward first, and then my Headshot talent activates and hits empty ground.

I feel like this is a result of the "instantaneous" nature of headshot. I don't even see a projectile so I presume there isn't one, and thus it misses completely when the enemy moves forward. Which is odd as if this was the case other instantaneous talents that activates on the area that the enemy moved from would also be broken in the same manner. I do not know if this is the case as I've yet to do testing on this.