In viewport, render frame is opaque Why?

lamoid_5f20d3e469

In the main viewport of Daz Studio 4.12.0.86, the area behind the rendering aspect frame is opaque. So, for example, the ground plane grid does not appear. I've attached an image. I used to be able to see the groundplane grid within the rendering area. Now I cannot. Anybody know why this happening?

 

Catherine3678ab

Yes, change your viewing option there. It's on nVidia so it's showing you what you'll see if you render the scene as is.

lamoid_5f20d3e469

I understand. Thank you, Catherine!