Hello together, I have an annoying flap at the back right when driving over small street bumps. I first thought that there was something balling around in the trunk, cleaned out everything, drove around completely empty. Without success. I checked all the plastic parts if they are firm. everything without success. Now we drove to South Tyrol last week and I folded both back seatrests. After some time I noticed then that the flapping is gone. This is now clear, d If it’s the right back seat, it’s gone, when it’s locked in again, it’s back again. Strangely enough, the backrest doesn’t move at all if I want to show the flap by hand. Did someone ever have that and what helped ?