Mouse cursor flickers continuously on resetting Camera prefab.

Steps to repro:
1. Create a new Project.
2. Create a prefab of the Main Camera.
3. In the Inspector > Camera Component.
4. Reset using burger button.
5. Repeat Step 4.

Actual Result:
Camera prefab continuously updated.

Expected Result:
Camera prefab should be updated once.

Reproducible in: 2020.1.0a20, 2020.1.0a16.

Working Fine in: 2020.1.0a15, 2019.3.0f6 (27ab2135bccf).

Environment:
Occurring only on Windows.