Invalid OpenGL Context for rendering exception is thrown continuously on restarting the editor after changing Graphic APIs to OpenGLCore.

Steps to repro:
1. Create a new Project.
2. File > Build Settings > Player Settings.
3. Uncheck Auto Graphics API for Mac.
4. Select OpenGLCore and drag it to the top in the list.
5. Click on Restart the editor.

Actual Result:
The exception is thrown continuously after restarting the editor.

Expected Result:
The editor should restart without any exception in the console.

Reproducible in:
2019.3.0a8.

Working fine in:
2019.3.0a7, 2019.2.0b8.

Environment:
Only on Mac.