Double-clicking on the game object in hierarchy deselects it.

Steps to Repro:
1. Create a new project
2. Hierarchy window
3. Double click on "Main Camera" GameObject

Actual Result:
1. The game object get focused and deselected after double clicking on it
2. After double-clicking to focus the GameObject, in the scene view, it has to be selected again to make any changes.

Expected Result:
1. The game object should get focused and remain selected

Occurring with:
2018.3.0a4, 2018.3.0a3, 2018.3.0a1

Working with:
2018.2.0b10

Environment:
Windows and Mac