Icon missing at the time of creation in the Project window

Steps to Repro:

1. Create a new project in URP or HDRP Template
2. Upgrade the SRP to 10x
3. Project> right-click > Create > Shader > Blank Shader

Expected Result:
Icon should be presented

Actual Result:
Icon is missing for Shader Graphs

Note: Icon is presented for default Shaders

Reproducible:10x, 9x, 8x,7x and 4x with 2020.2.0b2, 2020.1.5f1, 2019.4.10f1, 2018.4.23f1

Environment: Windows 10 and Mac 10.15