Reference is not updated in the Scene and Game window on deleting assigned sprite from the Sprite Light 2D

Steps to Reproduce:

1. Open attached Project
2. Delete Hierarchy > Sprite Light 2D > Inspector > Sprite

Expected Result:
Scene view and Game view should be updated with blank image

Actual Result:
Scene view and Game view is not updated

Reproducible on: Package Version 7.1.2, 7.1.1

Environment: Mac 10.14 and Windows 10