I think the multi-fold shower door on my Four Winds Motorhome is probably pretty typical. It works fine and I like it as it is much better than the plastic curtain I had on my old MH. But the door sli...
Another possible low tech solution is to cut a scrap of wood or whatever to appropriate dimensions to fit in the lower track of the door and keep it from closing (assuming it has a lower track; I'm not intimately familiar with these folding doors). Maybe a little clamp of some sort on the upper or lower track could also do the trick.