How to reproduce:
1. Open attached project "770544_SerializeReferenceRepro_2020.1.0a22.zip" and scene "Main"
2. Enter Play mode and observe the Null Reference Exception
3. In Hierarchy window, select "Main Camera"
4. In Project window, right-click -> Create -> "Create ScriptableObject ..."
5. Drag and drop newly created "Scriptable Object 1" to "Load Empty Interface" -> "Empty Interface Instance"
6. Enter Play mode (no errors are thrown, expected)
7. Save current scene
8. Create a new Scene, enter it and go back to scene "Main"
9. Enter Play mode

Expected result: no Errors are thrown
Actual result: Null Reference Exception is thrown

Reproducible with: 2019.3.1f1, 2020.1.0a22
Could not test with: 2019.2 and older (SerializeReference attribute was not yet released)