How to reproduce:
1. Open the attached project
2. Go to Menu -> File -> Built settings -> Set Graphics APIs to Metal
3. Go to the Hierarchy window -> Expand Camer Rig -> select the Main Camera
4. Go to the Inspector window -> Camera -> disable MSAA
5. Build for iOS and deploy the Xcode project to the iOS device

Expected: Camera render order shouldn't change when either MSAA is allowed on a camera or only Metal Editor Support
Actual: Incorrect camera render order

Note: The same issue occurs if the Players settings-> Other settings -> Metal Editor Support is disabled and in the Main Camera MSAA is enabled

Reproducible with: 2017.4.17f1, 2018.3.1f1, 2019.1.0a12

Tested with:
iPhone XS (iOS 12.1)
iPhone 6 (iOS 10.3.3)
iPhone 5s (iOS 9.3.3)