Firefox Community Forum

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!)

All of a sudden Firefox started to use alt+number (e.g. alt+3) to switch to that tab (i.e. tab 3 in my example).

Why? How do I disable this? It prevents me from typing any of the special characters that are located on alt + any number key. E.g. I can type the at-sign, not the dollar, or any such character which requires the alt-modifier and a number.

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.

I've been using tab grouping and it is really helpful.

But this morning when I created a new tab group called "MISC" I was unable to add any tabs to it.

1. I noticed that this new group happens to be the 11th group I've created. So I'm guessing that there may be a limit of ten groups. Am I right?

2. And now, some hours later, I see that the new MISC group does appear on my tab bar, but one of my old groups, TECH, has disappeared, but its contents seem to have been added to the MISC group.

Will in Seattle a.k.a. "Clueless"

With vertical tabs and expand on hover, clicking on the X box rarely closes the tab. Sometimes I have success if the pointer is on the left or right line of the box. Not having luck on the center of the box. Has been true for several weeks. With hover off, clicking the X works fine. I am running Windows 11.

how do I fix column back to its original. I mistakly renlarge it.

on the very top of the page right side there are three images that refer to the page. it usually show one box now it shows two. I want to go back to one.

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

I have recently changed my browser to firefox and I have noticed that sometimes, when I have multiples tabs opened, it happens that, when i click in a tab, it instantly opens a new window with that same tab. I know that is a way of doing that on puorpose, but it happens to me against my will A LOT OF TIMES, which has been annoiyng me a lot. I asked AI and it thinks it may be a malware but it doesn't seem so. I have looked up on settings and there's nothing about it. What should i do? Has someone been through something similar?

I am on FF 139.04. I have been there for Months. Suddenly, I see an icon for TAB GROUPS amongst my tabs. I am not able to find how to get rid of the seemingly automatic grouping.

1. How do I get rid of this icon appearing?

2. What does delete tab group do? That is, does it delete the group OR the group and all the tabs in it?

3. Where is documentation for how to use tab groups?

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.

Hi,

I started using the 'Vertical tabs' option to manage my tabs. I prefer it over the horizontal bar. However, I noticed that when going fullscreen (F11) the vertical tabs are not removed. This is different from horizontal tabs, which are removed from the UI when you press F11.

I think that's because vertical tabs are tied to the sidebar altogether. Is there an alternative to have the vertical tabs work the same as horizontal tabs?

Horizontal bar behaviour in fullscreen:

- The horizontal bar disappears when going fullscreen (F11) - The horizontal bar reappears when hovering the mouse over the top of the screen (which is great!)

Vertical bar behaviour in fullscreen:

- The vertical bar does not disappear and gets in the way of the fullscreen (F11) experience - Checking the setting "Expand sidebar on hover" does not replicate the behaviour of the horizontal bar reappearing upon hovering the mouse. Instead, the smaller version of the sidebar remains and it expands to it's full size when the mouse hovers over it - The only option is to remove the sidebar altogether, which means going back to horizontal tabs

Tab groups being returned to Firefox desktop a couple of months ago is one of my favourite features, which makes my life significantly better. However, I cannot find any information on its presence in Firefox Android. Is it added and not well documented? Is it not added? Is there a plan to add it to Firefox Android?

I use Windows, and my browser is already set to open windows and tabs and to automatically open Firefox on startup. My history is set to Remember History. I've tried using Ctrl + Shift + T with no luck. What else can I do to get this function back?

sense I leave tabs open that I want to watch latter i would like to be able to see the video before I close the tab: when i open it says the tab that is taking the most memory is "https://youtube.com (15668)" I tried clicking and right clicking but no functional it locate or go tab then i opened the drop down the search bar set it to tabs and typed in "https://youtube.com (15668)" but it showed no results.

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....

HI I cannot add an additional tab on top to open. I usually had no problem I need to open 6 to 8 tabs a day for work. Did firefox add a new version? every time I open an additional tab it closes the one I have open.

I don't know what happened is this a new version opened in fire fox.

Thank Linda