Choosing new HDR Colour using RGB values breaks colour on Intensity Selectors

Steps to reproduce:

1. Open a Unity Project
2. Drag the attached TestScript.cs into your Assets
3. Drag the TestScript.cs onto a GameObject on your scene
4. Select the GameObject so you can see the Test Script Component in the Inspector
5. Click on the HDR colour to open the HDR Color Picker
6. Select a new colour (e.g. red) using the colour wheel
7. Click up one intensity then down one intensity. Observe that the intensity colour matches the correct colour and doesn't change. This is expected
8. Select a new colour, but this time using one of the RGB Sliders
9. Click up or down one intensity

Actual results: The colours on the intensity blocks change to show the colours for the previous colours, as opposed to the new colour.

Expected results: The colours on the intensity blocks stay the right colour

Reproducible with versions: 7000.0.0a17, 6000.1.0b5, 6000.0.36f1, 2022.3.56f1, 2022.2.0a4

Not reproducible with versions: 2022.2.0a3, 2021.3.45f1

Can't test with versions: - 

Tested on (OS): Windows 11

Notes: -