I guess this is in 8 too, but ShowSelected won’t shade hidden objects, I guess it only shows display meshes that already exist. I guess it can be annoying waiting on 2000 hidden objects to shade, but not being able to see what I want to show because it’s in wireframe, so I have to take extra steps to get those 2000 objects to shade anyway, is more annoying.
It does show them, but just in wireframe as the render meshes have not been generated at that time. Is this what you are seeing too?