Halo 6" can causing AFCI breaker tripping issue

Halo 6" insulation contact new construction ceiling can causing an afci breaker to trip on a lighting circuit trying to diagnose the problem. This has only happened two times in my career of being a licensed General electrician on the Eastern shore of Maryland. I've installed 500+ of these fixtures with only having an issue with two of them. Needless to say it's a loss of time for me to keep finding faulty products. My only hope is to help inform the handy home-owners and professional sparky's of this. I can't be the only one to have this issue happening twice ✌️