Moving a pane in LibreOffice back to the main window

Question

I accidentally moved a pane in LibreOffice from it's nice docked position to a new window. Now I can't move back it.

As you can see, the Slide Pane is floating as it's own window and not docked like Tasks, etc.

Answer 1

To move the window back, simply hold the ctrl key and double click on any non-button area of the window chrome (not the contents btw).

Current versions of LibreOffice allow you to drag the Window and it will show a drop target.