On Activating Pro License, editor Skin stays grey instead of black. Until editor is relaunched

Steps to repro:
1. Create a new project in unity personal.
2. Go to Unity > Manage License.
3. Click on Activate New License.
4. Enter the Plus or Pro serial number.
5. Click on next > open unity.
6. Click somewhere in the editor or create any game object.

Actual Result:
1. Editor Skin stays personal
2. Does not happen when the editor is relaunched

Expected Result:
1. Unity editor becomes dark grey.

Reproducible on:
2019.3.0a5, 2019.2.0b5, 2019.1.4f1, 2019.1.0a1

Note: Earlier it used to stay half personal and half professional

Hub Version: Hub 2.0.0

Working fine:
2018.3.0f2

Environment:
Windows and Mac.