I’ve stumbled upon an interesting article about code analysis of UE 4 made by guys from PVS. I think it’s quite an interesting read and it proves that even such a big project made by pros contains bugs (some of which are very tricky, imho):
As far as I understand, devs are aware of this article and there’s no reason to inform them about it. Just wanted to share with the community 
Actually I was quite surprised to see this one:
