WebcamTexture rendering with artifacts(grain and noise) in play mode when color space is set to Linear

Steps to reproduce
1) Create new project > New scene > Apply ExampleClass script attached below to any gameObject.

Alternatively,

1) Install Vuforia Component.
2) New project > New Scene > Right click in hierarchy > Vuforia > AR Camera
3) Play the scene

Actual result: WebcamTexture renders with grain and noise

Environment: Mac 10.12 and 10.13

Reproducible on: 2018.2.0a7, 2018.2.0a4, 2018.2.0a3

Works fine on: 2018.2.0a2, 2018.2.0a1, 2018.1.0b13, 2018.1.0b1, 2017.3.0f3

By design: Caused by change of player settings default color space from Gamma to Linear. Vuforia requires Gamma color space in order to correctly render video background image.