How to reproduce:
1. Extract and open the attached “IN-108998.zip“ project
2. Open the “DepthShadowDemo.unity“ Scene
3. In the Hierarchy tab, select the “ShadowPlane“ GameObject
4. In the Inspector tab, open the “DepthShadow.cs“ Script
5. At line 65, comment out the “ValidateAll()“ function
6. Tab back into the Editor
7. Observe the Inspector tab

Expected result: “Depth Shadow“ Component has all the fields present
Actual result: “Depth Shadow“ Component loses some of its fields

Reproducible with: 2022.3.62f1
Not reproducible with: 2022.3.61f1 (6c53ebaf375d), 2022.3.65f1, 6000.0.54f1, 6000.1.14f1, 6000.2.0b12, 6000.3.0a3
Fixed in: 2022.3.63f1

Reproducible on: Windows 11
Not reproducible on: MacOS 15.5 Silicon

Workaround: Switching to a different GameObject and then switching back to the “ShadowPlane“ GameObject reveals the previously lost “Depth Shadows“ Component field