How to reproduce:
1. Open the user’s attached “ScenedTest.zip” project
2. In the Hierarchy window, select “Cube” GameObject
3. In the Inspector window, open the “Materials” Object Selector
4. Search for “CubeMaterial” and observe the result
Expected result: Two “CubeMaterial” materials are found
Actual result: One “CubeMaterial” material is found
Reproducible with: 2023.1.0a15, 2023.1.6f1, 2023.2.0b2
Not reproducible with: 2021.3.29f1, 2022.3.6f1, 2023.1.0a14
Reproduced on: macOS 13.4.1 (Intel)
Note: not reproducible with “Classic” Object Selector