Hi,
As you can see my screenshots here I have a center toolbar in dual view. My problem is this toolbar goes to on the right-hand position when I toggle in single pane view. Is there a way this toolbar be on the left-hand when I close a pane?
I don't think you can. Central toolbars are effectively to the right of the first file display, so if there's only one file display then they'll be on the right of the window.
So, this should be add to the features requests 
