Workhorse P30 Visibility problems by year

The contact owns a 2000 Winnebago Workhorse RV. The contact stated that while the RV was parked, the front windshield cracked. While the RV was parked, the contact heard an abnormally loud popping sound and became aware that the windshield had cracked. There was rust located on the metal part near the windshield. The RV was taken to a glass shop, which confirmed the cracked windshield. The RV was repaired, but the failure recurred on three occasions. The local dealer was not contacted. The RV was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 40,000.