Are you using an add-on to relocate your tab bar in Firefox 43? There's no built-in way to do it, so that how it's usually done.

Maybe the add-on needs to be updated to work in Firefox 44. You can check for extension updates on the Add-ons page. Either:

• Ctrl+Shift+a
• "3-bar" menu button (or Tools menu) > Add-ons

In the left column, click Extensions. Then above the list on the right side look for a "gear" button, click that, then Check for Updates.

Note: if you installed the extension by downloading and then dragging/dropping on Firefox, it won't update automatically and you'll have to check the Add-ons site yourself.

https://addons.mozilla.org/en-US/firefox/addon/tabs-on-bottom/ = stopped working in Firefox 44.0

https://addons.mozilla.org/en-US/firefox/addon/fdgueux-tabs-on-bottom/ = reported by a few users to work in Firefox 44.0

https://addons.mozilla.org/en-US/firefox/addon/classicthemerestorer/ = updated so frequently that I would be surprised it it didn't work in Firefox 44.0

I use code in userChrome.css do achieve this. This works for me in all Firefox versions (31esr-47a1 nightly) although I'm not using extensions that add extra toolbars with their own -moz-box-ordinal-group CSS rule.

Add code to the userChrome.css file below the default @namespace line.

• http://kb.mozillazine.org/userChrome.css

@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"); /* only needed once */

/* tabs on bottom */
#navigator-toolbox toolbar:not(#nav-bar):not(#toolbar-menubar) {-moz-box-ordinal-group:10}
#TabsToolbar {-moz-box-ordinal-group:1000!important}

The customization files userChrome.css (user interface) and userContent.css (websites) are located in the chrome folder in the Firefox profile folder.

• http://kb.mozillazine.org/Editing_configuration

Based on response to check for updates... no go. Firefox - tabs are there, but on top. Using v44

Hi Gar, which extension are you using to move your tab bar? The latest I've seen is the-edmeister's list earlier in this thread:

https://support.mozilla.org/questions/1106927#answer-837009

"Tabs on Top" has been the default, (with no option as with earlier versions), in Firefox since the Firefox 29 version was released in April 2014. Since then users have needed an add-on or "userChrome.css code" to move the tabstrip to the "bottom", so if that quit just now it is probably due to an add-on not being compatible with the new Firefox version.

You can look at the Tabs On Bottom or the Classic Theme Restorer extension to restore some lost functionality like tabs on bottom.

• https://addons.mozilla.org/firefox/addon/fdgueux-tabs-on-bottom/

Thanks to all three responses. It happens that cor-el's worked. Again a big thank you.

the-edmeister said

https://addons.mozilla.org/en-US/firefox/addon/fdgueux-tabs-on-bottom/ = reported by a few users to work in Firefox 44.0 Nope, didn't work for me. (FF 44.0). I have a lot of Add-Ons, including Tab Mix Plus installed, and would hate to give that one up; I use it many times a day. I can't understand why Mozilla would make this pointless change -- putting the Tabs bar on top -- without including a way for users to change it to our liking.