Save Scene pop up appears twice while restarting editor after changing the configuration to HDRP+DXR.

Steps to repro:
1. Create anew HDRP template project.
2. Hierarchy Window > Click "+" > 3D Object > Cube.
3. Windows > Render Pipeline > HD Render Pipeline Wizard.
4. HDRP+DXR > Fix All > Create One > Restart Editor > Don't Save.

Actual Result:
Save Scene pop up appears twice while restarting the editor.

Expected Result:
Save Scene pop up should not appear twice while restarting the editor.

Reproducible in:
2020.2.0a18, 2020.1.0f1, 2020.1.0b6 with Package version 9.0.0 preview.33, 8.2.0, 8.1.0.

Environment:
Occurring only on Windows.