Visual Effect Graph throws NullReferenceException when you drag in the first VFX created in an empty project

To reproduce:
1. Create a new project
2. Install Visual Effect Graph
3. Open Visual Effect Graph Window
4. Create a Visual Effect Graph Asset in Project View
5. Drag the Asset into the Window

Expected result: Visual Effect Graph Window loads the Asset
Actual Result: Reference errors

Reproduced on: 2019.3.0b1, 2019.3.0b12, 2020.1.0a14
Visual Effect Graph version 7.1.5