I suspect this is more likely the hinges at fault. Top lockers falling open, falling out and the loose screws is a well known problem. You need to check all of the overhead lockers, take photos and send them to the supplying dealer ASAP. This is a warranty issue. I had three locker fronts replaced under warranty and I replaced all of the hinge screws myself, re-countersinking all hinge holes and glueing the screw in. Many others have done similar.

Colin