How to reproduce:
1. Create a 3D HDRP project
2. Import the attached Unity Package "MATERIALS"
3. Observe the Materials imported and change their values in the Inspector
Actual result: Material previews are not shown until values are changed, this forces the user to mess with imported Materials for easy previews when he shouldn't be forced
Expected result: Materials imported instantly show their previews in the Project Browser
Note: The issue does not reproduce in a default 3D Project or a URP Project
Reproduced on: Windows 11
Reproducible with: 2023.2.0b6, 2023.2.0b18,
Not reproducible with: 2021.3.32f1, 2022.3.13f1, 2023.1.20f1, 2023.2.0b5, 2023.3.0a13