Hold down the mouse on the tab you want to move, them move it.

Any serious answer?

I'm surprised this problem isn't more widely reported. I don't remember this ever working. Though ctrl + shift page up/down runs the tab in focus left or right pretty fast but it's not the same as having a direct function.

It worked about ten versions ago but then it got defunct.

Does the tab has focus (i.e. has a focus ring) when you use the shortcut keys?

You can first click the location bar or search bar and then press the Tab key until you see the focus ring appear on the selected tab. Then the keyboard shortcuts should work (still works for me in the current Firefox release). If not then close and restart Firefox and also check for issues caused by (tab related) extensions.

• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

Now it worked. I had to press alt + b and the shift + tab twice to use ctrl + home or end shortcut.

I don't know how i missed the last word "twice" in this sentence but oh well it works. "Some of these shortcuts require the currently selected tab to be "in focus." Currently, the only way to do this is to select an adjacent object and "tab into" the current tab, for instance, by hitting Alt + D to select the address bar, and then Shift + Tab twice."

I'm used to having the tab bar on the bottom, so I need to press Tab and not Shift + Tab. I forgot that the Tab bar is on top by default and thus you need to use Shift+Tab to go back to set focus to the Tab bar. The number of times that you need to press Shift+Tab depends on the number of items that can receive focus.

I think you meant alt + D (Select Location Bar), alt + B doesn't do anything.

Yes, bringing the tab into "focus"/ring around it works, but that completely defeats the purpose of using shortcut keys doesn't it? When you have to press so many keys to access a shortcut.

You can use code in the userChrome.css file to make the tab focusable.

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 */

.tabbrowser-tab[selected="true"] {-moz-user-focus: normal !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

You can use this button to go to the currently used Firefox profile folder:

• Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder)

• Create the chrome folder (lowercase) in the <xxxxxxxx>.default profile folder if this folder doesn't exist
• Use a plain text editor like Notepad to create a (new) userChrome.css file in this folder (the names are case sensitive)
• Paste the code in the userChrome.css file in the editor window and make sure that the userChrome.css file starts with the default @namespace line
• Make sure that you select "All files" and not "Text files" when you save the file via "Save file as" in the text editor as userChrome.css. Otherwise Windows may add a hidden .txt file extension and you end up with a not working userChrome.css.txt file