I know that melee weapons were doing grazing hits in A19 as well, so no surprises there. The zombies, on the other hand...holy crap! I've had it happen three separate times where I'm playing the door-in-face game (zombie beating on an unlocked door, wait for zombie to swing, open door, pound zombie in da face, close door again) and after about the third swing, I opened the door to take another shot and the zombie ducks under my swing and swipes my kneecaps! I've observed zombie dogs surrounding me when I'm standing on an obstacle, as opposed to the swarm beneath you or as close as they can get to you. This looked suspiciously like strategy and pack hunting! Awesome if it is and keep an eye out if it's not planned behaviour!
Oh yeah! I used to only die in early game if I did something stupid. Feral sense at night did me right the f00k in! I was (imo) quietly raiding a building I'd cleared (one of the fast food joints) and started hearing a "couple" of zombies beating on things outside. I made the mistake of not planning a quick egress when I first heard them. By the time I realized that I had a problem, it was too late! It was almost like a screamer horde! 6+ dogs, 3 or 4 spiders, multiple ferals of various flavours, and they were at every door! Their pathing seems to have improved quite a bit!