On clicking the setting icon from the "Scene View Camera Settings", the window disappears, refer to the attached video.

Steps to repro:
1. Create a new Project.
2. Switch to Scene View gets closed
3. Click on "Settings for the Scene View Camera" dropdown
4. Settings for the Scene View Camera > Setting icon > Click

Actual Result:
"Scene View Camera Settings" window gets closed on clicking on the Setting icon.

Expected Result:
"Scene View Camera Settings" window is still visible along with the option under settings.

Reproducible in: 2020.1.0a13,2020.1.0a10,

Working fine on: 2020.1.0a9, 2019.3.0b10

Environment: Linux (ubuntu 18.04.3 LTS)