Reproduction steps:

1. Open "MinimalRepro" project
2. See Game view shader blur
3. Build Standalone player with Metal Graphics API
4. See no blur from the shader

Expected Result: Blur Shader works in Standalone Build with Metal Graphics API
Actual Result: Blur shader doesn't work in Standalone Build with Metal Graphics API

Fixed in: 2019.2.0a8, 2019.1.0b5, 2018.3.13f1

Reproduced with: 2019.2.0a3, 2019.1.0b1, 2018.3.4f1, 2018.2.20f1, 2018.1.9f2, 2018.1.0b1, 2018.1.0a7
Did not reproduce on: 2018.3.0a4, 2018.1.0a3, 2018.1.0a1, 2017.4.19f1, 2017.3.0a1

Note:
Only reproduces with Metal Graphics API