Answer by  
                                                                                          Mairum (8)
                                                            
                          
                          
                                                           One thing that can be done to fix many of the problems involving workspace in Dreamweaver and other Adobe development software is:
 
 1. Go to top menu item "Window". 2. Search for item "workspace Layout". 3. Select item "Default". This will reset the workspace layout and should bring back your scroll bar.