Properties are not added in the VFX property binding list from Properties window however those are added in the inspector tab. Refer attached video

Steps to repro:
1. Create a new project
2. Windows > Package Manager > Visual Effects Graph > Install
3. Hierarchy >right-click > Empty GameObject
4. Empty GameObject > Add Component > VFX PropertyBinder(Script)
5. Inspector > VFX PropertyBinder(Script) > Burger Button > Open Properties window
6. Properties window > Property Bindings > Add Proerties

Actual Result:
Properties are not added in VFX property binding list from the Properties window

Expected Result:
Properties are added in VFX property binding list from the Properties window

Note: Properties window is introduced in Unity 2020.1.0a19

Occurring in:
2020.2.0a12, 2020.1.0b9, 2020.1.0a19