WebCamTexture and the Pixel 4 (mulitple cameras)

I am trying to use an app created for the Pixel 3 on the pixel 4 which now has more cameras. Using this feature only shows a white screen. Is there any process or documentation out there yet on how to access the camera on a Pixel 4?

So changing API to .net 4 solved the white screen issue. But I am still having trouble with the front facing camera only shows in night mode. no color.