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This code in mozilla.cfg used to overwrite new tab, but as of latest firefox 136.0b1 no longer works. Any way to fix this? There error in Browser Console.

// mozilla.cfg needs to start with a comment line var {classes:Cc,interfaces:Ci,utils:Cu} = Components;

/* set new tab page */ try {

 Cu.import("resource:///modules/AboutNewTab.jsm");
 var newTabURL = "file:///D:/Documents/images/home.html";
 AboutNewTab.newTabURL = newTabURL;

} catch(e){Cu.reportError(e);} // report errors in the Browser Console

So I just try Firefox and I want to know if it have something like auto hide tab and I found your article on how to do this but it didn't show up on private tab or on the setting

This isn't a feature I ever needed or ever wanted. More than often, I accidentally group two or more tabs and have no idea how to ungroup them (yes, I know, there's some about:studies where I can remove stuff from grouped, BUT it's not a good mitigation). Firefox has been a great browser for decades. This new "feature" is rather disturbing than helpful. I understand some folks might need it, but please, at least provide a way to OPT OUT. Thank you!

I just updated to 148.0 and now can't find a way to open a second window. I've searched for options since it's not coming up clicking the icon in my taskbar, or any other place indicated. Mac IOS

Por algum motivo, meu firefox está abrindo conforme a página inicial configurada, contudo, sempre deixei para retornar com as guias que ficam em aberto e por algum motivo, meu firefox bloqueou a opção de abrir já com as guias da sessão anterior.

Não sei se é coincidência, mas está acontecendo após esta ultima atualização (19-05-2026), alguém mais está com este problema?

Minha alternativa será abrir minhas páginas todas novamente, e configurar para o firefox pegar as URLs como pagina inicial padrão...

About background website lists..Displaying the number of pages box makes it difficult to browse and I suggest placing colorful, easily selectable lists after the number of pages box list.

The setting works...in the way that if i quit Firefox, it'll not continue from the tabs and windows, but if i reboot my pc and open Firefox, I find myself the same place i stopped...even though i have that setting disabled. I found someone else with same issue on reddit and i did the same restarting the browser and refreshing and all....all to no effect.

Windows 10; Firefox 141.0

According to the "View recent browsing across windows and devices" command:

"Window 2 is current" and there is "Window 1" (which contains recent work)

My question(s):

How can I switch from window 2 (current) to window 1 (recent work)? and/or How can I combine both windows?

Thank you. (For your information, I have had a partial stroke, and I am 79 years old.)

Firefox has a feature where, if you select a tab and drag your cursor downwards while still pressing down on it, it will open that tab in a new window. Is there any way to disable this? I am frequently opening tabs in new windows when I'm just trying to view them and it drives me mad. I never use this feature intentionally- I am constantly using on accident due to quickly moving my cursor away from the tab bar to view the tab I just opened. Thank you.

I am using the Firefox browser version 138. However I am not able to use the Tab Groups from firefox. I cannot add any Tabs to any group as there is no option for that.

I recently updated to Firefox 138.0.1 to use the new tab groups feature, which allows grouping and labeling tabs, as outlined in Mozilla’s support article (expected for all users by May 6, 2025). However, after updating, I don’t see the tab groups option when dragging tabs or right-clicking them. Has anyone else faced this issue? Could it be due to the progressive rollout, a conflicting extension, or a setting I need to enable? I’ve tried restarting Firefox and checking the tab bar, but no luck. Any community solutions or workarounds to enable tab groups would be greatly appreciated! Please share your experiences or fixes.

HOW DO WE NOW " SET CURRENT TABS ON OPENING BROWSER "

YOU ELIMINATED THAT SETTING THE MOST IMPORTANT !!!!!!!!!!!! YOU ELIMINATED THAT SETTING THE MOST IMPORTANT !!!!!!!!!!!!