The glass on the roof of my 2015 Ford Edge just cracked on Saturday evening (08/27/2016) with a loud noise. Was just driving down an inside road at 40-45mph. No bridges or tall buildings around me for anything to fall on the roof. So doubt it was a stone chip from somewhere that caused the crack. Finding no reasonable explanation, I Googled the issue and found many with similar issues and glasses actually "shattering" and "blowing out". Bought the car in Feb 2016, and had them check out the roof on 08/18/16, because the motor sounded like it was struggling to close the roof. Told it was normal. Sharing my story with pictures and hoping to hear about your experiences with this glass roof. To me it looks like a stress failure.
I like it enough to pay extra for it, and assumed Ford Engineers designed it well. Defects can happen, but beginning to wonder now.