Firefox Community Forum

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.

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.

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.

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.

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.

Before I updated to 142.0.1 when I had a tab group and closed it by clicking on it, all the tabs collapsed into the tab group tab and the only thing I could see was the tab group title tab. This was awesome! I started using it immediately and loved it. Since I updated the tab groups still work, but now, sometimes, when I click on the tab group tab to close the group I see the title tab, one of the tabs included in the group, and a "+2" or however many tabs are hidden. This pretty much defeats the whole idea of having the tab groups in the first place, which to me, was to hide ALL THE TABS under ONE tab to clean up my work area.

The image below shows an example. Note the "eBay" tab group is closed, and yet it shows the tab group tab (eBay), a tab in that group (eBay icon and "Order" with the X to close the tab), and then "+2" meaning there are two hidden tabs. In contrast, the "Simple" and "Web Work" tab groups are also closed and contain 4 and 9 tabs respectively, all neatly tucked under the one tag group tab for each group.

Why is this happening only on some tab groups, and only some of the time? How can I stop this from happening?

Hi Was told to ask new question off of this tread. https://support.mozilla.org/en-US/questions/1314940#question-reply

I have similar issue. Have file that has all the tab history, but can't get Firefox to recognize or use it. The scrounger pulls up everything so the file is good it seems.

Why can't, or how do we get Firefox to use it?

Thank you

I am using Ubuntu 22.04. Firefox version is 143.0. IIRC firefox recently updated. I have the setting "Open previous windows and tabs" checked. Until very recently it has always worked but now when Firefox is closed all tabs are lost and don't appear when reopening Firefox. How to fix???

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

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

I recently decided to try vertical tabs in Firefox, and can't find a way to search these tabs as I could when they were horizonal, with the downward pointing arrowhead. If this is a feature, please let me know how to add it to my sidebar, and if not, it would be great if this feature could be developed. Thanks!

I am using tab groups and suddenly they all disappeared. There is no hint or trace of this function, not even in the tab pulldown menue. I checked the internet, I restartet Firefox several times, I restarted my notebook (Windows 11), I checked about:config (tab groups are enabled). I even reinstalled firefox - it seems like tab groups never have existed. What might have happend - and how could I get that feature back?

Thank you in advance Wolf

On Linux, clicking the X in the upper right hand corner of the Firefox display, or entering CTRL-W kills Firefox with no warning. It would be nice if there was an alert that came up asking "Are you sure if you want to kill Firefox?". Or at least add an option for this in Settings.

Since the last Firefox update, I've noticed an issue whenever I launch the browser. I have it set up so that I have multiple tabs open, and it's set up so that when Firefox starts up, it opens all of the previous tabs and starts me on the tab I was on when I closed the browser previously.

Now whenever I start Firefox, it opens to the last tab I was on, but said tab opens on my current homepage instead of the website that tab was on previously. I experimented by changing my homepage to "Youtube.com", picked a different open tab, closed Firefox and opened it again and sure enough, the tab was now on the Youtube page instead of what it had been previously.

Is this just a bug of the current Firefox version, or is there something in settings I can do to fix this?

Why on earth would you remove the ability to select move multiple tabs anywhere in an open window browser???? Until recently, I could select the first and last tab, hold shift and move them anywhere I chose. Now that feature doesn't work at all. It duplicates one tab or I'm given a choice to move to the front or last of all open tabs! Please give me the feature back!!1

OK - this keep happening on my firefox browser on my macbook laptop. I have a default firefox browser open with my 13 default tabs. Now when I have some app, like today specifically, the app for my voice caddy golf app. I open the app, do the update, and if I select any link that opens the voice caddy website, it opens it in a new firefox browser and tab, NOT a tab in my existing firefox with my 13 default tabs. So my default firefox gets trashed. In my firefox settings, I told firefox to open any new tabs in tabs, NOT pages. I also have open the last tabs open where I left off when I close firefox. What a pain. Tried several things to no avail. Why doesn't firefox have a setting (or the current setting do as I told it - open new websites in a new TAB, NOT a new browser.

Recently an update made it to where closing a tab group no longer works. It closes MOST of the tab group, leaving the last used one active along with a number to the right such as "+3" to show there are three more tabs hidden. This completely defeats the purpose of being able to close the tab group in the first place. In order to get around this, you have to click another tab to make it active and only then will the tab group you tried to close, actually close. Is there a way to disable this behavior so that closing tab groups actually works?

Assuming there is no fix, how can I downgrade to a previous version without losing all my settings, bookmarks, etc? Can I just uninstall the broken version and install the older version?

Thanks!