Picked this up for PS4, after beating it twice on PC. I love the game so far, but that weapon bug is really crazy. I'm by no means an expert Souls player, but after playing DS, DS2, and BB, I'd like to say I got a step on someone walking off the street, and THAT person is going to be really confused that their weapons are barely making it through rooms.
Just playing through the first sizable stretch to the first boss, and I'm having to use pretty much all my weapons. It's gone from an afterthought to the number one thing to worry about, to me at least. Hopefully they can either fix this or make it not so dramatic.