Camera Rendering Path Bug

I have a strange problem with Android build using 5.6.4f. Please see the screen shot below.



To summarise in words, all 3D objects are invisible when I have my camera rendering path set to anything other than Deferred Legacy. I say it's unusual because I only see the problem with this newly built scene and other scenes don't suffer this problem. I also render the scene to a texture, using the same camera (and settings). In addition, the scenes that do work are also using the same camera settings, which is set to use player settings.

My device is limited to Open Gles 2.0, but it's unusual that the other scenes work.

I'm not sure what's going on.