This, im sure is the first time we have read of this problem on this forum. It kinda stands to reason tho ... as the passenger side wall rests on the centre bar of the sink side windo when folded down. Glad to hear FR is covering this incident. Perhaps the roof should be tightened down a bit more on the latches to prevent this, or a soft sponge be inserted between the sink side window and the microwave table top.
Im a very slow cruiser when driving over RR tracks, but my camper too has seen some very rough roads.
2008 Nissan Frontier 4x4
2011 Rockwood A122