Hello

For information purposes Firefox release notes https://www.mozilla.org/en-US/firefox/releases Since the release of https://www.mozilla.org/en-US/firefox/131.0.3/releasenotes

Fixed an issue where the "List all tabs" button was not able to be moved from the toolbar. (Bug 1918681)

Customize Firefox controls, buttons and toolbars https://support.mozilla.org/en-US/kb/customize-firefox-controls-buttons-and-toolbars

Below, if you wish to test, an code, userChrome.css, you can find tutorials on the web.

#alltabs-button{display:none!important;}

Hello,

I’m on the latest Firefox version (141.0.3), and the problem with the "List All Tabs" button still exists. I’m using the "Simple Tab Groups" extension, and the issue happens every time I switch between tab groups with this extension: after each group switch, the "List All Tabs" button reappears on the toolbar, even if I removed it before.

The suggested workaround using userChrome.css doesn’t seem like a good long-term solution to me. From what I can tell, this button probably appears automatically when hidden tabs are detected. And when using "Simple Tab Groups", there will always be hidden tabs, since tabs from other groups are hidden by design.

Should this be addressed as a Firefox issue, or is it something I should report to the Simple Tab Groups developer instead?

Thank you.

Have you tested, userChrome.css

Manage a tab group https://support.mozilla.org/en-US/kb/tab-groups#w_manage-a-tab-group

You can Save and close group, which will save and close the group for you to be able to re-open from the List all tabs icon .

But, if, userChrome.css is used, how should I proceed?

The suggested workaround using userChrome.css doesn’t seem like a good long-term solution

I agree with you.

If, userChrome.css is used, and tabs not closed, and restart Firefox.

Configuring session restore https://support.mozilla.org/en-US/kb/restore-previous-session#w_configuring-session-restore I can use, Open previous windows and tabs.

Just for information.

I have not tried using userChrome.css, because I would prefer a permanent solution without relying on it.

I am on the latest Firefox version (141.0.3). This issue happens only when using the "Simple Tab Groups" extension. Without this extension, the "List All Tabs" button does not reappear.

From my observation, the button appears automatically whenever hidden tabs exist. With "Simple Tab Groups", there are always hidden tabs (tabs from other groups), so the button keeps coming back after each group switch.

Could you please confirm — is this considered Firefox’s expected behavior (and should be reported as a Firefox bug), or is it something I should report to the Simple Tab Groups developer instead?

Thank you.