Firefox Community Forum

Hi, I have the settings of 'General > Startup > [checked] Open previous windows and tabs' on. Most of the time it works as expected, but there are several occurrences when all of the sudden all of my pinned tabs are gone. When this happened, I usually tried the 'Command + Shift + T' to restore them. Sometimes they came back, some other times, they don't.

Can you fix it?

It's starting to get really irritating because I can have >12 tabs pinned and it's troublesome to have to remember them all in case this happens again in the future.

Thanks!

How can I move a tab to an open window? I know there is a function in the pull down menu to open the tab in a new window, but I would like to move the tab to a window that is already open. Google and Brave Chrome have a seamless, easy way on the pull down menu. I use it all the time, but I want to keep Firefox as my default browser. Thanks!

Why won't Firefox open any new windows? I give ir the command to open a window and yet all i get are tabs and I never click on open a tab. I have an HP probook this for windows 10 and i am also having the same problem with Chrome. I have uninstalled and reinstalled chrome and that did not fix it so it is not that. What would cause this? I have already cleared the cache cookies history browsing etc. and nothing is fixing it. PLEASE HELP.

In early June 2025 I finally ditched Windows 10 for 11 and I've been a Firefox user since practically the very beginning of Mozilla.

Now, I notice that the "Restore Previous Session" button in the drop-down of the FF menu is missing. Additionally, I discovered late in the game that Mozilla DID listen to me and gave us the ability to "name" or "tag" an entire window in the browser. This was a HUGE boon to productivity as I'm constantly toggling from window to window to tab to tab.... Now, with the most recent update this ability seems to have disappeared....

https://support.mozilla.org/en-US/questions/1248171

I saw bunch of threads which suggest to enable "ctrl+tab cycles through tabs in recently used order". It does what I need, but in previous versions I used to press only ctrl+tab. While I was holding ctrl I could iterate over tabs via tab key. After releasing ctrl selected tab was chosen

It differs with current behavior where you press ctrl+tab and after releasing all keys pop up with tabs is still be viewed and you need manual action with space/enter/mouse click to open selected tab

Is there any way to use only ctrl+tab without any manual actions required like it was back in the days where after releasing the control key selected tab is opened?

mozilla won't save my previous windows and tabs even though i have that check marked in the settings. it's been like this for months. to keep them i've had to keep my pc on for moths. help, i'm thinking of leaving Mozilla because of this, it's incredibly frustrating to lose all my work every time.

I regularly use a website which intercepts command-option-up and command-option-down for its own navigation. This is a central part of my workflow with this website, and without it it becomes completely unusable.

After updating to Firefox 140.0.4, these shortcuts are now used by the browser to switch tabs. I have not found any way to configure this. Am I missing some obscure way to do this or is this just impossible?

I imagine this change was made to support vertical tabs, but I'm not using those, so the command-option-left and command-option-right shortcuts make more sense for my horizontal setup. (I don't use those shortcuts either, though- I use ctrl-tab and ctrl-shift-tab!)

I don't want AI I don't even want to be near it. I don't want it lurking in the background of my browser. I don't want to waste a single processing cycle on even considering it. I never wanted AI, and they jammed it into my browser.

Currently, they popped up an ad for "AI Enhanced Tab grouping" and said that you can turn it off in the settings. I looked in the settings, and could not find such a thing. Searching for "Tabs" "Suggested" "AI" and other such related terms yields no AI things.

Why tell me I can turn something off in the settings if there is no setting to turn it off?

But that's just the start.

I want nothing to do with AI. I don't want to use a browser that supports it.

I WILL MAKE MY OWN DAMN BROWSER IF I HAVE TO. I QUIT GOOGLE, I'LL QUIT FIREFOX.

Mozilla used to be a safe-haven from all the bullshit other tech companies were pulling. And now this.

GET. AI. OUT. OF. MY. BROWSER.

I DON'T CARE IF IT'S LOCAL. I DON'T CARE IF YOU SAY IT'S SECURE. I DON'T CARE IF IT'S GETTING BETTER. I. DO. NOT. CARE.

GIVE ME THE OPTION TO PURGE AI FROM MY BROWSER OR BY FUCK I'LL FIND A NEW BROWSER.

PROBLEM: Pinned tabs are useful, but if I have more than one Firefox window open and I close them in the wrong order, the next time I open Firefox, my pinned tabs are gone and I have to pin them again.

SOLUTION: Pinned tabs should be able to be permanent so that they will re-open no matter which Firefox window is closed first. Is there a way to make this work?

When right-clicking on a tab and choosing Move Tab, the option for a new window has gone MIA from the tab context menu. It still shows To Start and To End. Is there a config option that got changed?

https://support.mozilla.org/en-US/kb/tab-context-menu

When I click a link I always want it to open in a new tab. How do I do this without doing a right-click and selecting "Open in new tab"?

I want it to open in a new tab when I simply click the left mouse button.

After the latest update, when I move a tab to the start of the line, it shrinks down to something unreadable. Before, it stayed the same size, with tabs all being the same size as each other, that size being dependent on how many tabs were open ONLY. How do I turn off this "Feature" ? I liked it the old way. I don't even know exactly what to look up to try to fix it.

I also hated tab groups, with my tabs suddenly moving around on me. I hate having to do research and maintenance every time I get an update. If this keeps happening, I may just stop updating or go to Chrome or something.

I just updated to the most recent Firefox version and read about the unload feature. Sound great, but when I right click on the tab the menu does not have unload as an option.

With FF 140.0 on both WIn10 and WIn11, new tabs opened automatically then closed after less than a second. Initially I thought this was due to malware, but on inspecting the History, I found the source of this annoying behavior:

// SidebarUtil.tab.js

// This is just a placeholder file to be loaded in a temporary tab to check if a sidebar is open and how wide it is.

Is there a way to STOP this sidebar checking with its tab opening/closing without disabling Java entirely ? Is this annoying behavior really necessary in FF ?

I did not ask for tab grouping. I do not want tab grouping. And then when browser grouped tabs without my requesting it to; and would NOT allow me a way to un-group them, providing only the option to "delete tab group", which when exercised deleted all the tabs, not just the group! Now, I don't f-ing want firefox anymore! Why act like microsoft and shove features down our throat without explanation or option to chose or not chose?

There's a feature that pins tabs if they're dragged to the left of the tab bar, shown in the image attached. Is there any way to disable this functionality? I can't seem to find any documentation on it whatsoever.

Maybe it is my spiritual guides because i obsses and have OCD and have too many tabs. But i started having tabs get deleted and i have no tabs on re-launch, tried to check, re-check this. I Am not sure if to reinstall because i don't want to lose passwords or setting/history (i don't remember now it should be saved) but usually reinstalling doesn't solve anything for me anyways...

I didn't install any new extensions when it started happening!

It doesn't happen every time so it is hard to troubleshoot, i cannot use browser with safe mode. I might test it couple times.