Normally you would see the lead ' buckle ' if it was an expansion/contraction issue . The lead should be under the door moulding and I'd be very surprised if a person would be able to push it like that , my guess would be a window cleaning tool has caused it. Or the lead wasn't properly ' rolled ' after it was adhered to the glass. Three solutions, one , if under warranty, call them out, two, remove the unit and straighten the lead yourself. Three, straighten the lead in situ , cut any excess off that doesn't go behind the beading with a single edge razor blade ( or similar) , then press incredibly firmly along the line of the lead