I am a new member from central Texas. I purchased a certified used 2017 GLC 300. The other evening I parked the car in a covered parking garage. The next morning the drivers window was cracked in a horizontal " U " shape with the open end at the A pillar side of the window.There are no signs of anything hitting the window or someone trying to gain entry to the car. The cracks were wavy like a school child would draw a picture of a wave. The window is the acoustic laminated type. MB dealer said never saw anything like that before and no it is not covered by warranty. Has anyone else experienced this issue?