How to reproduce:
1. Open attached “IN-99220” project
2. Make sure project is running in DX12
3. Open the “Scene”
4. Select the “Options” GameObject in the Hierarchy
5. In the Inspector toggle on the “Make Green” property, under the “Render Options” script component
6. Move the cursor over overlay buttons in the Scene view
7. Observer the Scene view

Expected result: All cubes are green color, no flickering
Actual result: Cubes flicker between red/green colors

Reproducible with: 2022.1.0a1, 2022.3.62f1, 6000.0.48f1, 6000.1.2f1, 6000.2.0a10

Reproducible on: Windows 11
Not reproducible on: No other environments tested

Notes:
- Does not reproduce on DX11, Vulkan Graphics APIs
- In the Scene view, flickering occurs when moving cursor over Scene view GUI elements
- In Play mode, flickering occurs when moving cursor over most GUI elements
- If project is saved and reopened after toggling “Make Green” property, issue won’t reproduce until the property is toggled again