In Editor, Applying Mouse left-clicks on Scene view 'Search Query' field it's not selectable and not getting highlighted. Refer attached video.

Steps to repro:
1. Create a New Project
2. Try to select Scene View 'Search field with Mouse left-click.

Actual Result:
Scene View Search field is not selectable with Mouse controls.

Expected Result:
Scene View Search field should be selected and get highlighted after applying left Mouse click.

Reproducible in:
2021.2.0a6, 2021.2.0a5

Working fine in:
2021.2.0a4, 2021.1.0b8

Environment:
Windows 10 and macOS 10.15