HDR color picker intensity slider returns wrong values

Steps to reproduce:

1. Open any existing project, or download the one attached (HDRColorPickerBug.zip)
2. Select the Emissive material
3. Click on the color picker field
4. Change the color to anything but the default
5. Try changing intensity values either by typing them in, or changing the slider
6. Close the color picker window
7. Open it again

• Expected behavior: intensity value remains the same as the one specified by the user
• Actual behavior: intensity value shifts upon closing and opening the color picker window

Notes:

• Reproduces in all currenlty supported Unity versions (2020.3+)
• Affects HDR color picker only
• Affects all parts of the UI where HDR color picker is present
• Does not reproduce with colors of equal RGB value (shades of white colors)