Model is getting distorted in Main Preview Window after selecting it

Steps to Repro:

1. Open [ShaderGraph] RQA project from the Collab
2. Project > right-click > Create > Shader > PBR Graph
3. Double click on newly created Shader Graph
4. Main Preview Window > Click on Sphere

Expected Result:
User can view the model from all the angles

Actual Result:
Model is getting distorted

Reproducible on: 2019.3.0a12

Working Fine on: 2019.3.0a11, 2019.3.0a10

Environment: Windows 10