Texture Disappears Depending on Viewing Angle

[Josh NZ]

Can anyone please explain why the walls in the attached image appear black when viewed from certain angles?

I don't have any light source turned on and have just dragged a copy of the top VP and then changed the view from front to left to right etc.

Thanks in advance.

[AlanW]

No but try eye dropping one viewport to the black one to see if it fixes it. Then change the view angle again.

You may have a class turned on in the viewport that has the lights on. This can cause the 3D to go black.

Edited August 24, 2016 by Alan Woodwell

[Josh NZ]

Thanks Alan, had a look but not light sources.

I had a quick look and all 4 viewports have the class attribute for walls set to black. For what ever reason in two of the viewports the texture overrides the fill. Have done a class override for all 4 VPs and made that class white fill and now seems to work.