Reproduction steps:
1. Make sure you have HDR enabled
2. Open the attached “repro_IN-88688“ project
3. Select the “Assets/TextMesh Pro/Resources/Fonts & Materials/LiberationSans SDF.asset“ and open its material
4. In the Inspector, in the “Face“ section, select the “Color“ parameter field
5. Observe the opened color picker

Expected result: Opened window is called “HDR Color“ and there are additional selections for HDR
Actual result: Opened window is called “Color“ and there are no additional selections for HDR

Reproducible with: 6000.0.26f1, 6000.0.30f1, 6000.1.0a7
Not reproducible with: 2021.3.46f1, 2022.3.54f1, 6000.0.25f1

Reproducible on: Windows 10 (22H2)
Not reproducible on: No other environments tested

Note: The “Color“ parameter field also doesn’t show “HDR“ on top of it in the reproducible versions