How to reproduce:
1. Open the attached “CookieBug.zip” project
2. In the project window select the “Cookie.png” image in the Assets folder

Expected result: In the Inspector Mapping can be changed
Actual result: In the Inspector Mapping can not be changed

Reproducible with: 2019.31f1, 2020.3.20f1, 2021.1.25f1, 2021.2.0b15, 2022.1.0a12

Notes:
- Mapping setting is available when “Light Type” is “Point”
- The expected result can be achieved by changing the “Non-Power of 2” option to anything else that isn’t “None”
- When clicking apply the greyed out mapping option gets applied
- Does not matter if the texture is POT or not. ( Tried with the base texture of 256x256 and 384x512 sizes)