I didn't see any mention of this on the patch notes, but ever since the maint, when puppies shoot, the bullets start off at a significant distance in front of them, rather than at their mouth like usual (about 2/3 blocks). The damage doesn't seem to be higher, and although the distance is large enough for you to stand in between the puppy and the bullet start point, you still get injured when they shoot. This has also made bombing the puppies seemingly impossible w/o using RSS since you can't get close enough to plant a bomb w/o being autohit by a bullet spawning in your face.
I've not seen any mention of this in the forums so it seems like no one else is bothered surprised about this, but I saw no mention of it in the patch notes and can't think of any reason or logic as to why they would be made this much senselessly harder/weird.
TL;DR: puppy bullets' starting point is WAY farther out from the puppy's mouths than normal, no mention on patch notes.
I thought a puppy had super range on RJP 10 seconds ago, but didnt notice anything else, since my clients has 10x lag after every patch.