In this video, James shows us that the rubbers have come loose from the bottoms of the rear doors and that the door membrane are beginning to fail.
As with all makes and models of cars, the window seals are impossible to fully waterproof as they are a moving part, so they are designed that water passes through the door and drains out of the bottom.
The door membranes are meant to be removable should there be a need to access the inside of the door, but also form a waterproof barrier, so they are sealed with a bead of tacky adhesive.
Over time this adhesive dries out and can cause the membrane to pull away from the door, thus letting in water.
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