So I've been having trouble for a while now with a bug on the PS4 version 1.10 that makes me lose equipped weapons after picking up an item that something can be placed in. Example: I lost my SK after picking up a hiking jacket (holding square) and then dropping it. I spent so much time running around trying to find it because I didn't realize it placed my SK in the hiking jacket that I dropped. Luckily I found it. This is not the first time this has happened. It is very annoying. Other than that this game is absolutely amazing! Just hope to see little things like this fixed sometime soon!
Update: It seems to be getting worse. So far it's done this to me 20 times and counting within a 2 hour time frame. You have to check your equipped weapons each and every time you drop something that can hold items, otherwise you will lose them.