Warden Eternal Glitch

Me and my friend have both noticed that there is a glitch involving killing the Warden. We have both killed him multiple times but it hasn’t given us the kill towards our enemy commendation. Can someone shine some light or have had any experience on this too?

I have noticed this as well; to get credit for that commidation you need to be the one who puts the last shot into the warden. #the struggle is real