1. What happened
[2D][Sprite Renderer][Material] Editor Crashes when changing Sprite Renderer Material to "Default-Diffuse"

2. How we can reproduce it using the example you attached

Repro Steps:
1. Open the attached project
2. Open Scene
3. Click on game object
4. Click on Material > Sprites-Default > Select new material > Default-Diffuse in "Sprite Renderer" Component
5. Editor Crashes when changing Sprite Renderer Material

Additional Info: Crash happens when user clicks on any Surface Shaders.

Example:
"Default-Diffuse"
"Default-Material"
or
Create New Material: "Legacy Shaders/Diffuse"