Graves ammo bug

So I have been playing Graves for the past week or two now and I have come to notice that the bug was actually quite bad when it happens now, the bug is say you're playing graves, you either shoot twice and you're out of ammo. Sometimes (I think it's towards the end of the reload or beginning frames) after you e it will tell you that you have one more shell (which it should) however you can't fire it and he just proceeds to reload as if he has no more shells left. I'm making this in an attempt to toss my at you so that you can make him better and toss him back to me and the community.