Not Enough SPARK!!!!!!!!

       First off guys it is NOT about my vehicle. I am referring to primers. Well about a week ago at the range my son-in-law had a round (that I loaded) not fire. Well I'm thinking how did i skip one on powder oh well I'm not perfect just human. I told him I'll break it down and go from there. This was a 5.56/.223 round from his AR. Looking at the primer it had a solid firing pin strike. I got the kinetic bullet puller out and broke the round down. Well I retrieved bullet and powder. Yep I did put powder in that one. So next step was just to remove the spent primer and found that it indeed had some form of a spark. The primer looked like it had fired and the primer pocket was dirty where it sparked. I clean primer pockets on all my brass. When I clean a pocket it has to have some shine to it before I let it go on to the next step.
       This is a first for me in my 30+ years at the load bench. I do believe that it was Bob or Greg that had a bad primer that had no compound in it just cup and anvil. I am guessing not enough compound. So I'm asking anyone else have this happen to them. I do understand with the millions that are made ya bound to get a flub mere and there. It was a CCI 200 primer and yes I'll still use CCI primers as they are my go to primers and I use other makes as well.