NullReferenceException is thrown when selecting a GameObejct with Volume Component

Reproduction steps:
1. Open the attached “BugRepro” project
2. Open the “Assets/Scenes/Fase1.unity” Scene
3. Select “Post-Processing” GameObejct in the Hierarchy window
4. Obersve the Console and Inspector windows

Expected result: No error is thrown and the Volume Component in the Inspector window contains properties
Actual result: “NullReferenceException: Object reference not set to an instance of an object” error is thrown and the Volume Component in the Inspector window is empty

Reproducible with: 2023.2.0a23, 2023.2.8f1
Not reproducible with: 2021.3.36f1, 2022.3.21f1, 2023.2.0a22, 2023.3.0b10
Fixed in: 2023.2.9f1

Reproducible on: Windows 11
Not reproducible on: No other environment tested