Our recent experience may have some relevance to those considering rough road travel with their Escapes. On a trip to Cathedral Gorge S.P. in NV, we were moving camp. After dumping our tanks at the park's dump station, I pulled back on to the main road (the dump station had an elevated gravel pad). Apparently I was closer to the edge of the pad than I realized, and one trailer wheel went off the edge of the pad. We were moving rather slowly and I didn't think that the drop was all that significant. However, when we arrived at our next camp and entered the trailer, we found that the inner pane of our rear window had cracked in numerous places. As the outer pane was intact, and everything on the interior of the trailer was in place, we can only conclude that the trailer's "twisting" due to the drop-off had resulted in the breakage. Temperatures were fairly mild--highs in the 70s and lows above freezing. Thus, I don't think that expansion or contraction of the glass was a factor.
The Escape is a 2015 17B which we picked up in Aug. of that year. Apparently the Hehr windows are only warranted for one year. So we're in the process of having the window replaced locally. While I've tried to minimize rough road travel with the trailer, many of the public campgrounds in the west involve dirt or gravel roads. The experience with the broken window will make me more conservative as to rougher roads in the future. I know folks have reported cabinets opening and even refrigerator doors falling off, but I don't recall any reports of broken windows.