-Mouse cursor flickers continuously on selecting clicking on Solo button in CM vcam1 prefab.
-Virtual Camera status does not remain live on clicking on solo button.

Steps to repro:
1. Create a new Project.
2. Windows > Package Manager > Cinemachine > Install.
3. Create a Virtual Camera from Cinemachine menu.
4. Create prefab of Virtual Camera(CM vcam1).
5. Click on "Solo" button.

Actual Result:
Virtual Camera(CM vcam1)prefab continuously updated.

Expected Result:
Virtual Camera(CM vcam1) prefab updated once.

Reproducible in:
2020.1.0a20, 2020.1.0a15.

Working Fine in:
2020.1.0a14, 2019.3.0f6 (4f179a04ad78)

Tested with Package Version: 2.5.0, 2.4.0, 2.3.4, 2.3.3.

Environment:
Occurring only on Windows.