Broken Ps 4 Controller. I had never setup anything in steam for controller support, it had always just worked so I never fussed I with it. The rubber on the top of the analog stick.
It won't do you any good to try and replace it because the part is not readily available. I contacted Sony over the phone and they filed a case number for me after obtaining some information/details. If it doesn't work, you may have a broken controller on your hands.
I haven't been able to find any answers anywhere on google or youtube.
Buy and sell new and used items near you in Ontario.
Now you have to be very careful because the charging port on a controller is very delicate and you can very easily end up breaking some charging pins. So if you have a broke controller then you now know how to fix it!!! Over the last month Ive been experiencing controller issues with Warframe.