I tried to outline it in the picture; At the bottom of the door, the plastic piece that runs the length of the bottom of the door has come undone a bit towards the front. I can pull it back and see through from the top to the ground, and it looks like whatever was holding it to the door has broken (I actually was near my car when it happened; I heard a pop and then saw this on a really hot day) and now everytime I open my door, where this isn't flush against the door anymore, it hits the fender and bends. Is this something that happens often? And how can it be fixed?