How to reproduce:
1. Open the "testScene" Scene in the "case_1184602.zip" Unity project
2. Select the "Sphere" GameObject in the Hierarchy
3. Navigate to the GameObject's Material and change the Shader from "Standard" to "HDRP/Lit"
4. Observe the crash

Expected result: a possibility to change the Shader of the Material without a crash

Reproducible with: 2019.3.0b5 (HDRP 7.1.2), 2020.1.0a7 (HDRP 7.1.2)
Not reproducible with: 2018.4.10f1 (HDRP 4.10.0-preview), 2019.2.8f1 (HDRP 6.9.1-preview)
Could not test: 2017.4 (no HDRP)

Note: only reproducible when the Scene view Shading Mode is set to Wireframe or Shaded Wireframe and the Graphics API is set to Direct3D 12 (Experimental).