Photolab Image Browser will not dock

I can View> Undock Image Browser, but Dock Image Browser only creates a border at the bottom of the screen.
How to go back to the normal PhotoLibrary view?


On Windows you can just close the Browser window and it will stick itself. Not sure about Mac but you can give it a try.

I was able to get it back docked, by double clicking to tiny dot seen at the bottom of my first screen shot.