Firefox Community Forum

Hi All,

I had several tab groups. I open and save and close them every day. but since yesterdayI cant find them at all. If I create a new tab group it appears but those old tab groups not! I've tested troubleshooting mode but noting.  

Firefox 154.0 (aarch64), macOS 26.6.2.

MacOS 26.6, Latest Firefox. 153.0.3. Tabs are not restoring, since update to latest FF. Tab History shows old stale tabs, not the tabs that were present at time of exiting Firefox. I had closed those tabs. Is this an artifact of caching?

The active tabs should be stored at FF shutdown, not the old closed tabs prior to that. This Firefox quirk is both on my Mac Mini M4, and on my MacBook Pro M3. Kind of a pain in the neck to restore where I was. It's enough to make me reconsider this browser - which I have used for decades, using Windows, Linux and now MacOS.

I researched how to restore a session. It told me to go to History and click Restore Session. There is no line with that name, in my Firefox, on a Mac.

Under History the docs show 4 items before "Clear recent history...", I only have 1. Recently closed tabs 2. Recently closed windows 3. Search history. There is no Restore session.

The tabs that were open last session are in the start up window, and the check box is set to restore tabs and windows. But my tabs were not restored. (I only had a single window open.)

What can be done to "restore" previous behavior of Restore Tabs and Windows? Thanks for any and all assistance.

I had multiple tab groups which I had chosen to save and close. These tab groups have now completely disappeared and I cannot find them. When I began using Tab Groups, I had checked and there was no information stating that unopened tab groups would be deleted. I want these groups back. If I had known Tab Groups would disappear, I would have saved my tabs into a folder. The only Tab Groups that show up now are under "Recent tab groups". If tab groups are going to be deleted after a set period of time, it should be stated clearly in the tab group settings. It would also be really useful to archive them into a bookmarked folder so people don't unexpectedly lose hours of research.

I use the tab groups feature a LOT at work and have more group than available colors. I'd like to also be able to specify custom colors that suit my preferences (I like chartreuse for its high visibility).

Since the last update (I know that Firefox DE is a beta/semi-nightly release, I just want to know if this is my mistake or a bug), only my first firefox window has address bar, all the other windows don't. And when tabs are vertical, the rest of the windows don't even have a title bar. (This behavior doesn't apply to newly created windows) Also, non-primary windows also lose the capacity to resize the vertical tab bar. ¿Did I do something wrong or is this a bug?

On Firefox I have repeatedly pinned four tabs for websites that I use frequently. The pinned tabs disappear at unpredictable times, not necessarily when I re-open Firefox.

Hyperlinks keep opening in new windows, not in the same/existing window where they were selected. Issue is not unique to Google Search results and occurring across multiple websites. At wits end trying to figure this one out. I have deselected the "Open links in tabs instead of new windows", turned off all extensions, and uninstalled & reinstalled Firefox. Issue is still occurring. Attached is image of my tab selections showing all turned off.

dear sir/ mam:

like in safari, i had pinned the websites (as tabs) i visit regularly.

when i restarted the browser, all tabs were gone.

i have been using this feature in safari since a decade and no pinned tabs have been lost.

please guide.

I have the same issue as this person https://support.mozilla.org/kn/questions/1373153. I HAVE the "Open previous windows and tabs" option on, i also DON'T have the "Clear history and cookies when closing the window" nor "Clear history when Firefox closes" nor "Always use private browsing mode" on so the solution doesn't work for me. Firefox won't open previous tabs when i close the window. However upon restarting my PC i have noticed that when i start up Firefox, my previous tabs are opened. So it seems the action of closing the window is doing something to prevent Firefox from opening the previous tabs again.

Hey guys, so I always have a bunch of tab groups as it helps me organize my tabs. But every time I accidentally close Firefox or my pc resets, all the tab groups are gone. UNLIKE google chrome where, even if I close chrome they will be on the toolbar for me to open again. So could you please add this feature on firefox as well because this is getting very irritating because I have to open the individual tabs again and again? Thank you.

After today (Sep. 2, 2026)'s update, I noticed that the the plus "+" button for new tab is canceled. Instead, I have to now click right on the work function and click "New Tab" for a new tab. This revision is quite counter-intuitive. Could you please add back the plus "+" button for new tab in the next update?

Thank you very much.

Hello,

I'd like to report an issue with a recent Firefox update.

Since one of the latest updates, the "Close all duplicate tabs" option has disappeared from the tab list menu (the menu opened via the small arrow on the right side of the tab bar). I've looked for it elsewhere in the UI and haven't been able to find it.

System info:

Firefox version: 154.0 (64-bit) Operating system: Windows 10 Professional, version 22H2 (OS build 19045.7663)

This feature is particularly important to me because I regularly keep a very large number of tabs open — often several hundred, sometimes over a thousand — and being able to close all duplicates at once was essential for managing and cleaning that up.

A couple of things make me think this may be an unintentional regression rather than a deliberate change: Mozilla's own support article on the Tab overview menu still lists "Close all duplicate tabs" as part of this exact menu, and I couldn't find any mention of its removal in the release notes for the two most recent versions (153.0.3 and 154.0). That said, I haven't found an existing bug report that matches this, so I wanted to check here first.

I'd really appreciate help with the following:

Why has this option disappeared from the tab list menu? Is this an intentional change, or a bug/regression? Has the feature simply moved somewhere else in the UI? If it's a bug, is there already a tracked report I should follow, or should I file one?

Thank you in advance for your help — this was a feature I relied on daily.

Something changed.

When I clicked a link, it would open in a new window. Now it only opens in a new tap. I need it to open in a new window.

I'm using Win 11 with Fire Fox.

I have over 2000 tabs stored in multiple tab groups using the Legacy extension "TAB GROUPS" in Firefox 56. I recognize this is out of date and I was going to migrate the tabs to the current version. I was unaware that Tab Group would no longer be verified as of March 14. I need to save all of the tabs in TAB GROUPS to favorites. Is there someway to temporarily enable TAB GROUPS so I can recover the websites? Is there a session file that has the websites that I can access? Help - I am in desperate need!

Firefox version 145.0 in Linux Ubuntu 22.04.5 LTS. When I open Firefox all tabs from previous session are gone. On "Startup" I have checked "Open previous windows and tabs". Which worked before but not now. It is very frustrating. How do I fix? The Profile Manager opens the settings and "Open previous windows and tabs" is checked. Checking "ask before closing multiple tabs" doesn't help.