To reproduce:
1. Create a new project
2. Add a 3D Cube to a scene
3. Build for iOS
4. Observe errors in the console :
"Shader compiler: Compile Standard - FORWARD, Vertex Program: Internal error, unrecognized message from the shader compiler process. Please report a bug including this shader and the editor log."
5. Deploy the Xcode project to iOS device
6. Observe the crash at: "UnityGfxDeviceWorker (33): EXC_BAD_ACCESS (code=1, address=0x0"

Expected: the project is built without any issues
Actual: getting shader errors in the console while building the project and built project crashes on launch

Reproduced on:
2019.2.7f2

Regression introduced in:
2019.2.5f1

Not reproduced on:
2017.4.32f1 2018.4.10f1 2019.2.4f1 2019.3.0b4 2020.1.0a5

Crash reproduced on these devices:
- iPhone 7 iOS 12.3.1
- iPad Pro 12.9' (2nd gen) iOS 11.2.1

Getting only a black screen on these devices:
- iPad Mini 2 iOS 11.4.1
- iPad 5th gen iOS 10.3.3

Notes:
- Attaching Editor.log for console errors
- Doesn't reproduce on Android VLNQA00015, Samsung Galaxy Note8 (SM-N950W), Android 8.0.0, CPU: Snapdragon 835 MSM8998, GPU: Adreno (TM) 540
- Reproduced on Metal, OpenGLES2
- Doesn't reproduce on OpenGLES3
- When building with OpenGLES2 getting a black screen with a grey SPHERE (sphere.png) even though there was only a CUBE in the scene
- When building for a second time, getting a pink screen in an iOS device