Hi Nick - I see what you mean now, sorry I did not know it involved hiding the solid part.

Yes that is a problem currently that if the parent solid of an edge is hidden, then the you can't select that edge with the mouse.

That's actually been a limitation for quite a while but before now it was not quite so easy to hide everything else other than one edge. So it is kind of more noticeable now.

You can get out of that problem by showing the solid, once it is shown then you should be able to select the edge as usual. For now that is the workaround but I think I will be fixing this one up.

- Michael