[VFX Graph] Exposed Properties added to the Visual Effect component are overlapping

Exposed properties added to the Visual Effect component are overlapping with each other in the inspector window. refer attached screenshot.

Steps to repro:
1. Create a new project
2. Windows > Package Manager > Visual Effects Graph > Install
3. Project > right-click > Visual Effects > Visual Effect Graph
4. Drag and drop "New VFX" to the Hierarchy window
5. Open "New VFX" graph from the project window and enable Blackboard
6. Add a minimum two-property from the category list eg. Vector 2, Vector 3, Texture 2D, etc.
7. Select property > Exposed
8. Select "New VFX" in the Hierarchy
9. Inspector > Visual Effect > Properties
10. Observe properties are overlapping with each other.

Actual Result:
Exposed Properties added to the Visual Effect component are overlapping with each other.

Expected Result:
Properties doesn't overlap with each other.

Reproducible in:
2020.2.0b6, 2020.1.7f1, 2019.4.10f1, 2019.3.15f1

Package version found: 10.0.0-preview.27, 9.0.0-preview.33, 8.2.0, 8.1.0, 7.4.3 , 7.4.1, 7.3.1

NOTE:
Visual Effect Graph is introduced in 2019.3.0a10.

Environment:
macOS only