There isn't a built in way to do that since all the navigation toolbars are on one toolbar.

You can restore this functionality by installing the Classic Theme Restorer add-on

• https://addons.mozilla.org/en-US/firefox/addon/classicthemerestorer/

Too bad, I liked the merging of the back/forward button when relevant. I do not understand why they made this uncustomizable. Is there any technical/programming reason for making the nav toolbar as one toolbar?

One of the developers was around the forum recently trying to answer some of these questions so I will quote the developer

For the full quote and useful links for fixes and explanations please see

• Why have you changed design in new Firefox 29.0? /questions/998084#answer-566525

Each setting you see in a computer program you use requires work; when a developer wants to build something new or improve something, he or she has to go through each related (hidden) setting and test if it still works like before and do that on each platform Firefox runs on. That's Apple's Mac OSX, various flavours of Linux and various flavours of Windows, including Windows XP. This costs time, lots of it, and that amount grows exponentially with each setting that's added. This comes on top of our work to continuously fix, improve and innovate Firefox.

i have installed "classic theme restorer" - as advised by firefox support here.

now there is a new issue: installing this extension brought back the firefox button in the top-left corner. but at the same time, this extension removes/hides the new menu button on the right side of the toolbar.

using the customization screen i am able to put the button back on the toolbar, but pressing this button has no effect.

and here is the punchline: since firefox support team is listing this extension as the one and only possible solution to several hundred thousand user complaints, this is now a FULLY SUPPORTED BY MOZILLA FEATURE/PRODUCT.

you cant win both cases: 1) either you stop recommending this extension and replace all such instances with a simpler "unsupported feature" for all forum questions. at least this way your users will know to look for a new browser. 2) actually fix the feature in your product to work as the users desire.

That should work with the CTR extension. I'm not having such a problem with the extension.

Try to click the "Restore Defaults" button in the Customize palette to restore the default toolbar setup.

You can also check for other extensions or themes interfering