Blutilities window Minor tab not able to be reopened

When the user closes the tab in the blutility window it is impossible to get the tab back. Problem persists even after closing the editor.

1. In Editor Preferences > Experimental > Tools make sure Editor Utility Blueprints (Blutility) is enabled.
2. Create a blutility
3. Doubleclick created blutility
4. Close tab in window
   Observe that you can not bring tab back even after closing and reopening editor