Shader Graph Built-In Material preview does not update

Repro Steps:

• Create a new 3D Core URP Project
• Create a new Shader Graph Lit shader
• Open to Edit the shader - make sure to have the Material Preview in view
• Add a new node - say, a Fresnel to the Emission input

Expected behavior: 

• The material preview would reflect the change

Actual behavior:

• The material preview stays turquoise blue