Custom Cursor appears while hovering on the Package Manager Window

Steps to repro:
1. Open the attached project.
2. FIle > Build Settings > Player Settings.
3. Assign "Cursor" as a Custom Cursor using asset selector Window.
4. Window > Package Manager > Hover the cursor on Package Manager Window.

Actual Result:
Custom Cursor appears on the Package Manager Window.

Expected Result:
Custom Cursor should not appear on the Package Manager Window.

Reproducible in:
2020.1.0a5, 2019.3.0b5, 2019.2.0f1, 2019.1.0f1.

Environment:
Only on Windows.