Left eye is not rendered when built for iOS in Lightweight RP for VR.

Steps to Reproduce:

1. Launch editor with Lightweight RP for VR.
2. Make a build for iOS Platform.
3. Run and Observe that, on mac 10.12 both the eyes are not rendered and on 10.13 left eye is not rendered.

Note:
While building on mac 10.12, both the eyes are not rendered and on 10.13, only left eye is not rendered.

Occurring on Android build as well.

Environment: Mac 10.12 &10.13, Windows 10 & 7
Reproducible on : 2018.1.0b13, 2018.1.0b12, 2018.1.0b11, 2018.1.0b10.( Can't check on prior builds as project doesn't compile due to errors.)

VR LWRP template is currently working in Unity 2018.3.0a8.