Assault Assignment Progression not being counted.

Under the assignments for the assault class, the assignment to get kills while using adrenaline shot is not being accurately counted. I have had multiple kills within 1-2 seconds of administering the shot yet my counter remains at 2/30. For other challenges, I have found that quitting the game and restarting sometimes allows progression to work (i.e., repair vehicles), however, it is not working on the adrenaline kills progression.