yes, several of the 9 windshields that I have had replaced were due to stress cracks happening on a cold morning, usually while being defrosted but some just sitting. Some just cracked with no outside influence. I firmly believe that some of these are due to a defect in the windshield frame. After 7 cracked windshields in a year and a halfs time, and pages of STAR case calls, Chrysler replaced the frame and that held up for another year and a half before another windshield cracked. So far, its been about 4 months and still holding up.
12 JK,2.5" Teraflex lift,Bilstein 5100's,BFG KO2's P305/65R17
17 WK2 Trailhawk