I understand that version 106 changed the default setting of the following preference in about:config from false to true so I don't know why you are getting that with an earlier version. browser.tabs.tabmanager.enabled You may have to restart the browser.

https://support.mozilla.org/en-US/kb/about-config-editor-firefox

Many thanks! That solved the problem. That and removing the Firefox logo that suddenly appeared on the bar meant I only have a tab bar when I have more than one tab, the way it should ALWAYS be

Quite why Mozilla insist on doing this, so people like me, average users have to hunt around just to have the browsers configuration we had the day before.

It's enough to make me consider a different browser.

Cheers for the help

You can possibly set the browser.tabs.tabMinWidth pref to 50 (50 is the minimum for this pref) to have more tabs open before the tab manager button appears. about:config => browser.tabs.tabMinWidth = 50 You can open the about:config page via the location/address bar. You can click the button to "Accept the Risk and Continue".

Regards, James

Thanks for that. I have no issue with the tab manager button appearing when there's more than one tab (although I think it's a pointless feature I will never use)

But on smaller screens and especially on wide screens, losing half an inch of screen having a tab bar there when you only have one page open is just silly. Give us the option to turn it off, don't FORCE us to have a tab bar if we don't want one.

A while back, a kind soul showed me how to mod Firefox to disable the tab bar when there's only one page but the tab manager changes all this, although the kind post from Terry has allowed me to get that back