Reproduction steps:
1. Open the project "1398073_IndirectColor"
2. Open Assets/Scenes/SampleScene.unity in a text editor
3. Check "m_IndirectSpecularColor", its value should be {r: 0, g: 0, b: 0, a: 1}
4. Open Assets/URPScene in Unity
5. Right click on the "URPScene" in the Project window and click "Force reserialize assets"
6. Check "m_IndirectSpecularColor" again
Expected result: m_IndirectSpecularColor is the same (m_IndirectSpecularColor: {r: 0, g: 0, b: 0, a: 1})
Actual result: m_IndirectSpecularColor is different (m_IndirectSpecularColor: {r: 0.44407046, g: 0.49331486, b: 0.57238823, a: 1})
Reproducible with: 7.1.1 (2019.4.36f1, 2020.3.32f1), 12.3.1 (2021.2.17f1), 13.1.7 (2022.1.0b14), 14.0.2 (2022.2.0a10)
Notes:
-Not reproducible when force reserializing "EmptyScene"
-"URPScene" Scene was created using: File > New Scene > Standard (URP)
-"EmptyProject" Scene was created using: File > New Scene > Empty