Color picker keeps on selecting colors even if the mouse is clicked at a particular color also selected color is not getting applied to the object

Steps to reproduce:
1. Create a new project
2. Select the Directional Light from the Hierarchy.
3. Click Color Picker
4. Move it around the screen to pick a color
5. Notice that Color Picker is not selecting color and State is always active

Actual Result:
Color picker state is always active and the selected color is not getting applied

Expected Result:
Color picker stays with selected color's state and the color is applied to object

Note: Refer attached video

Occurring in: 2019.3.0a11, 2019.3.0a10

Working fine in: 2019.3.0a9, 2019.2.0f1

Environment:
Occurs only on macOS (Tested on macOS 10.14)