I doubt this is a bug, just a newbie mistake but I can’t figure it out. I created a simple model of a picture frame for a TV. It includes the frame, the case of the TV and the glass of the TV. They all have different depths relative to each other. And a simple wall and floor as a stage. This is what they look like in Rhino (GH generated):
But when loaded into SD the objects are all reversed relative to the stage:
I can give you a link to the view or the .gh file if it helps.