Battles Won Long Ago WQ gives no credit for kills

I have been killing Enraged Glutton and Skittering Leecher several times and I am not getting any credit for the kills. I am not in a group, much less a raid group, and the enemies are red, not gray.

I’m having the same issue. I have the flag on my character’s back and am within the boundaries but still no credit for kills. I tried logging out and back in and yet no luck. Has anyone figured out what’s causing this?