Firefox Community Forum

I really can't add to my Summary other than it's a fairly recent issue, started in May 2026, possible April. About.config is set to False. I hope some has a solution - it happens when I'm dealing with live incidents.

Since the last two Firefox updates currently have 136.0.2 (64-bit) "Open link in new tab" has been doing weird stuff like.... 1) it will open the link in a new tab BUT also opens the link in the already open tab giving me two open pages the same. Kind of defeats the option of "Open link in new tab". 2) trying to highlight text is not as simple as it once was. Left click before the text hold then drag, sometimes it starts then the blue highlight box just disappears or jumps to a different part of the text and sometimes nothing at all happens. 3) the mouse has been playing up as well since the last two Firefox updates, click the x in a tab to close the tab nothing happens and it is not as accurate there was a sort of margin to where the pointer had to been before the command worked not right on whatever you wanted the pointer to operate now it has to be as accurate as possible before it recognizes the command as the x to close a tab ect. I have uninstalled and reinstalled the mouse and drivers still happens. A still image would not really show the problem I need a video but I don't know how to do that and could I upload it? Thanks for your time.

I have read a Mozilla blog that you can make tab groups now, i have tried to make a tab group and it for some reason i can't, i looked at Mozilla's guide for the Tab groups, they didn't help. Does anybody know how to fix this problem?

Hello, My Firefox recently updated (it's now v. 138.0.1), and now I can't seem to create tab groups anymore. When I move one tab on top of another, nothing happens. What can I do to get this useful tool back? Thank you!

About a month or so, opening tabs changed. It's more annoying and less convenient now for no clear reason.

Before, when I opened 20 links in new tabs, the existing tabs were pushed to the left. Now, the new tabs disappear to the right, and I need to scroll the tabs list to see them.

This makes researching things annoying. Especially when I'm trying to find anything useful among tons of useless search results. Normally, I would see every tab that I opened. I could always instantly see by the number of open tabs and domains if I should continue the search. No tabs? I haven't found enough. Same domain? I'm probably running in circles.

To replicate this workflow, now I'd have to manually scroll every time I open a new tab, which would be mighty annoying.

Meanwhile, there's no advantage to seeing my old tabs rather than new tabs. The new tabs are always more important in the moment because I just opened them.

Can this be changed back to old behaviour in about:config, or by some arcane profile hacking?

Hello. I love the feature. I didn't know it was a new feature because I started using Firefox around April. I saved my group tabs, very happy about it. Then I close and save it, then I opened it again, it was great!

I am a student, I use my group tab to add the tabs that have the resources that I need to, and would also like to study for more knowledge and for my next school year.

There was no problem at that whole time. In April 21, there was no problem until April 22, 23 no problem. But I forgot my charger at that time, because I was at my mothers house. Then I wait for weeks for my charger to come back, about 2 weeks for my laptop to revive there in my grandparent's house.

When I got my charger, and opened firefox. Wait, but at first when I opened firefox, it showed me that there is a new update, an update about tab groups that I already now. I looked at my group tabs, and they are not there anymore.

What should I do to get them back.

I've got Reading the full Article on GROUP TABS that has been released yesterday on My Firefox it Got Update and Installed But I just couldn't found the "Add to the Group option when I click right at any of my tab" + If I drag over one on Another Tab it just got replaced like they substitute their Places No BOX Border line Shows No Group Created NOTHING. I'm a Nearly 6 Year Old Firefox User I NEEDED that FEATURE SO BADLY PLEASE FIX it SOMEHOW. ThAnks Regards: Loyal USer

In Firefox Nightly, I am using vertical tabs - Whenever I close a pinned tab and reopen it, there is an annoying divider I have to manually increase in size. This is super annoying, is there a way to do that automatically or remove the divider? Thanks!

When I'm on a website and click on a link to open in a new tab, the new tab option does not show. The open a new window shows. The options should show in the order of open a new tap on top, followed by open a new window. This only happens when the link shows above two third's of the page. If the link is on the bottom third of the page the option for open a new tab shows above the open a new window. When on a web page I can't scroll down if the link is above two thirds of the page (at the top two thirds of the page). This has been happening through Firefox updates that don't correct this issue.

I am stuck in full screen. I can get back to the tab menu by moving my mouse but I have arthritis in my hands and every extra movement makes it harder for me to use my computer, in addition to the flipping back and forth being incredibly annoying. I am going to have to use a different browser if I can't find a way to stop this. There must be an easy fix but I can't find anything in settings that helps.

I want to see all my open tabs all of the time... firefox keeps showing full screen, I don't want that... how do I reset settings using windows 11, logi keyboard HELP!

After my macbook pro (Sequoia 15.7.7) restarted, every tab in both of my open Firefox windows were moved to a *tab group in a single window.* The tab group's name is the date—e.g., "2026-10-11 10:50 *". Right-click + `ungroup tabs` does nothing. If I open a new window, it automatically has a tab open in a tab group with a similar name. I can't move tabs into new tab groups. I hate this. I've lost all my previous tab groups, which I use to organize my work and hobbies, and now that's all gone. I've experienced this on TWO macbook pros. I also have a Windows 10 desktop, but that continues to work as expected.

Months ago, I disabled all AI features, and, and so in `about:config`, I can observe that `browser.tabs.groups.smart.*` are all set to false. I also just tried setting `browser.tabs.groups.enabled` to false, but it had no effect.