"There should be one material data entry per instance" error is thrown on deleting static game object after baking the scene.

Steps to repro:
1. Create a new Project.
2. Create a static cube game object.
3. Windows > Rendering > Lighting Settings.
4. Lightmapping Settings > Lightmapper > Enlighten.
5. Delete Cube game object after baking the scene.

Actual Result:
"There should be one material data entry per instance" error in the console window.

Expected Result:
No Errors in the console.

Reproducible in:
2020.1.0a18, 2019.3.0f5(209f7fb30bd5), 2019.3.0a12.

Working Fine in:
2019.3.0a11.

Environment:
Occurring on Windows & Mac.

Stack trace:
There should be one material data entry per instance. Instance data entries: 0, material data entries: 1.