That's the Command Bar, you likely have it turned off. To turn it on, right-click on the Toolbar area at the top of the screen and make sure the Command Bar option is ticked.
Samsung Galaxy S8 review
1995-2015: How technology has changed the world in 20 years
This poetic animation about monsters is illustrated in a Van Gogh painterly style
Apple predictions 2017
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.