On adding New Script to Animation State from "Add Behaviour" in the Inspector, the focus is switch Package Manager when the "Package Manager" window is docked/Opened. refer attached video.

Steps to repro:
1. Create a new Project
2. Winodws > Package Manager > dock
3. Project > right-click > Create > Animator Controller > Open
4. Animator Blackboard > right-click > Create State > Empty
5. Select "New State"
6. Inspector > Add Behaviour > New Script > Enter Name > Create and Add

Actual Result:
Focus switch to Package Manager when adding a new script to State

Expected Result:
On adding a new script to state, unity focus is always on State and properties get displayed in Inspector.

Reproducible in:
2020.1.0a17, 2020.10a15

Working Fine in:
2020.1.0a14, 2019.3.0f3

Environment:
Windows 10 & macOS 10.14.