How to permanently disable group tabs?

[Firefox23]

Every night I accidentally add these infuriating groupings over and over again. Then I lose the tab trying to quickly get rid of it in anger. Why on earth can't I disable them??

I get that for people who want them they may be the best feature ever added but this has been forced on me and I don't want it

[Agentvirtuel]

Hello

For information purposes https://connect.mozilla.org/t5/discussions/help-shape-the-future-of-tab-groups-in-firefox/m-p/95970/... with Firefox 138.0.3, the preference, browser.tabs.groups.enabled is true, by default.

For information purposes.
1 - Go to Configuration Editor for Firefox
https://support.mozilla.org/en-US/kb/about-config-editor-firefox
2 - Enter a search term browser.tabs.groups.enabled
To change a boolean (true-false) preference's value, double-click on the preference.