Based on my experience with this window in the rear hatch, and evaluating the build/design I come to the conclusion there is insufficient cushioning on the rear hatch of the latest gens of mid size SUV’s. The prior gens had a split system and the ability to lift the window portion independent of the tailgate, and were well cushioned with rubber seals. The latest versions are all single tailgate/window incorporated into 1 module and the window portions do not have a cushioning seal surrounding the framework. Result? Vibration, and solid type of impact around the perimeter of the glass which encourages micro-cracking and eventual failure.
Just my opinion, but the manufacturers can and will, as in my case with Mazda Canada, deny, deny, deny. In fact Mazda CA indicated to me they had never heard of the issue despite it being well documented throughout the internet.
I also registered my issue with the Canada Transportation Safety Board for an investigation of Mazda and other manufactures denial of their being aware this is a problom and the failures that have ocurred. Hopefully they can also pursue my suggestion that they concert with the US DOT.