How to reproduce:
1. Create and open a new HDRP project
2. In the Hierarchy select the “Sky and Fog Volume”
3. In the Inspector under the Volume component click “Add override”
4. Select “Chromatic Aberration”
5. Enable “Spectral Lut” and click on the field to select an asset
6. Observe the available assets in the Object Selector

Expected result: LUT assets are shown
Actual result: LUT assets are not shown

Reproducible with: 6000.0.59f1, 6000.2.7f1, 6000.3.0b4, 6000.4.0a1

Reproducible on: macOS 15.6.1 (M1 Max)
Not reproducible on: no other environments tested

Notes:
- This reproduces only with the Advanced Object Selector
- To be able to select the LUTs you have to delete the “Render Texture” filter
- This issue also happens with Component “Light > Emission > Cookie” setting