Photon is a new design that creates a fluid, native experience on every operating system. There is more room above the tabs, the search bar and address bar now have the option to be combined or separated, and the menus in Firefox are organized by common tasks.

In order to customize all your favorite functions, you can use the ‘Customize’ setting in this new menu to add the bookmark menu back to the toolbar. See the Customize Firefox controls, buttons and toolbars article for more info.

If have the Firefox Menu Bar ..... Mouse to top to a empty spot and right click and turn on Menu Bar.

OK, Bookmarks in Bookmarks go down your bookmarks till find a duplicate folder called Bookmarks Toolbar... They will be in this duplicate (happens every update/install so always look for it I have about a dozen but that covers years of what was important at the time) so just drag and drop to the Bookmarks Toolbar or into the same folder at the top of the list.

Please let us know if this solved your issue or if need further assistance.

Seburo said

Photon is a new design that creates a fluid, native experience on every operating system. There is more room above the tabs, the search bar and address bar now have the option to be combined or separated, and the menus in Firefox are organized by common tasks. In order to customize all your favorite functions, you can use the ‘Customize’ setting in this new menu to add the bookmark menu back to the toolbar. See the Customize Firefox controls, buttons and toolbars article for more info.

Yeah that didn't help one bit. I had it when I first upgrade it but it disappeared after I shut down my pc. You see the empty space? this is my problem

I still not sure what you want.

Is it the Menu Bar or is it the Bookmark Bar you want or you just want to get rid off the empty space. ???

uninstall Firefox. Then Delete the Mozilla Firefox Folders in C:\Program Files and C:\Program Files(x86) Then restart system. Then run Windows Disk Cleanup. Then run it again and click the button that says Cleanup System Files. Note: your Firefox Profile is saved. But you should make a back up before you do : https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

Reinstall with Current Release Firefox 57.0 with a Full Version Installer https://www.mozilla.org/firefox/all/

Please let us know if this solved your issue or if need further assistance. ____________________________________________________________________________