Our top hinges are connected so that they slide (with effort). Over time, they do slide from traveling and we will first notice that the gaps are not even between the sides of the doors. We just open the door and apply pressure at the top to move it back, starting with the most rear door. We haven't had them bad enough to not latch, but it probably could happen if we didn't adjust them when we notice this. We have done it maybe 3 times in 2 years. If we could always have smooth even roads, it wouldn't happen. We notice it after driving in some of the awful campground roads with dips and hollows.
