I am creating my first exploded assembly is 2018 and thought I would try this neat new feature to make exploded lines easier. Unless I am doing something wrong which is entirely possible, I think there needs some tweaking done. As you can see from the shot below, I pulled a bolt and 2 washers up together and then pulled them back spreading them out for the view. When I created the smart lines I got 3 different lines going up, and then probably 3 lines going back. But at least the lines going back were all in line. Did I miss something?