2 viewports with the same properties are not rendering the same way

The background of one of my viewports is gray while the other is white. They are both using ray traced with neon mode. I have tried printing this with and without lights turned on and I get the same result.
I am using Rhino 5 and the environment is set to solid color and should be gray.
Any help would be appreciated.

I don’t believe, unless I’m forgetting, that you could use Neon in more than one view at the same time. I wonder if it is the Rendered view in one of those. You may need to save out the Neon view captures and then bring them back in with PictureFrame to see both in the print.