Does anyone have this problem? It happened to me already 3 times, for no apparent reason. The top bolt with the plastic washer was tightened very light. It starts to piss me off. This time, I did not get a new panel, but fixed it with superglue mixed with washing powder (something that I learnt from my mechanic), and added some rubber on top. The panel not only had a crack, but the top part completely separated from the rest.