$.02 more: Bought new, 4/05, wife's daily driver, until 6/16, rear window detached summer '12, garaged @ home but not @ work, we do get Serious summer heat here (Riverside County, remember; except for coastal areas & mountains, most of southwest US is desert or borderline). Top material was still in very good condition. Had top replaced w/Gahh top, pricey w/labor but no choice @ the time. No leaks otherwise.
My theories; Chrysler took action on early window problem (failures began around '09) after voluminous complaints & NHTSA inquiry. However, it was never a "recall", it was a "goodwill" offer of a special warranty written just for this defect and they specified/notified all of the Vin numbered cars/owners that were delivered within 8 States only. They skipped several neighboring States w/same climate, so essentially they were saying that only those cars qualified?!? AKA: cost control, of course!?!$?!$
I believe that the manufacturing process used at the time was somehow defective. Many of these failures occurred far too early in a reasonably expected lifespan of the top. Coincidentally, perhaps VW used the same supplier because many of the ('05 & ?) convertible Beetles had the same issue.
Note; in my research I discovered that Chrysler requested all of their field reports submitted on the issue be treated as confidential forever, @ NHTSA. Couple of years ago, I submitted a Freedom of Information Request for those reports, (minus personal info of course) and was denied.