So there was indeed a bug in the BFG aiming that you could see on that map, basically the raycast was shooting too low due to me failing to factor in the target actor height when doing a LineTrace. Anyhow, I've fixed it on my end, mostly. There is a sweet spot where you can accidentally shoot a wall if you're at the right incline/decline so I'm going to try to resolve that before releasing a hotfix. I'll also see about the FOV-offset target prioritization thing, but if that needs a lot of tweaking I'll patch this first then work on it since this is a more pressing issue.
Very good bug catch, thanks.