Hello,
here are the facts. the windowscreen broke with a crack without any interference from the outside. i.e. the hood was up. I parked the car in the evening (no crack) next morning (with crack). the only clue I can think of might be outside tempereatre being 15 Celsizus evening and 3 Celsius in the morning. this might have shrunk the too tight frame and broke the glass. and this time the crack is on the right side.
regards
Juergen