This is about as unnecessary of A button as they come and i'm not at all worried about getting it fixed as this is an old joycon to being with but what would have caused this? every single button other than that one works correctly. I bridged the two points on the rail itself and I know they are not touching anything else other than what they should be but i'm curious which ribbon cable is responsible for those buttons..The one near the edge or the one near the center. As I feel like I didn't connect one properly as one of the ribbons had the contacts hanging out...the one near the edge. Didn't seem like it would go in further but I didn't push too hard as at the time I had no clue this was A thing.