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I really love Firefox’s new Split View feature. The Alt + Click shortcut to create vertical split pages works perfectly and greatly improves my multitasking workflow for side-by-side tab comparison. However, there is currently no native keyboard shortcut to cancel / exit Split View and separate tabs without closing either page. To undo split view, users have to rely entirely on mouse operations: right-click tabs or click the divider menu. This breaks keyboard-first browsing efficiency and creates unnecessary extra clicks every time I finish comparing pages.

Feature Request

Please add a dedicated built-in shortcut to quickly separate tabs and close Split View. A simple key like Esc or a custom combination such as Ctrl+Shift+Alt+X or something would be ideal, matching the convenient Alt+Click way to trigger split view.

Hi,

After the last Firefox update, the "Open previous windows and tabs" setting stopped working, and I need to use the shortcut "Ctrl+Shift+T" after each start to restore the previous tabs.

Is there any solution for this problem or there is a way to downgrade to a version where "Open previous windows and tabs" works correctly?

My current version is 152.0.1 (64-bit).

thanks.

I love vertical the tab view. Unfortunately, on one of my systems, vertical tabs to not render correctly. Groups are shown, but there are no favicons or titles shown (see attached image). The tabs are also not clickable. Any insight into how I could debug that would be amazing!

Hello

Vertical tabs are a good idea. However to make a transition smoother special for those, like me, that have been using horizontal tabs for a life time (I was a Netscape user), can I suggest that the new tabs come on top instead of on bottom?

I could write a long motivation for that, user trend, psychological, etc, but I am sure you got the point.

Thanks + regards Luis

Can the quantity of tabs ever get so large that finally one more tab wont open? What are the max count of tabs recommended, and when should they be removed to start over?

Почему при нажатии клавиши F11 (полноэкранный режим) не сворачиваются вертикальные вкладки? Почему нет ручного скрытия вертикальных вкладок?

________________________________ Why doesn't pressing the F11 (full screen) key minimize the vertical tabs? Why is there no manual hiding of vertical tabs?

Dear forum, I had to reinstall Firefox and now a tab opens for every request/every time I open a new page. I don't want it to be like this, but only open a new tab upon explicit request. Where can I change this setting? Thank you, Sirpa

how do i now set current tabs

Your new system doesn't allow us to SET CURRENT TABS ON OPENING BROWSER

THIS IS THE MOST IMPORTANT SETTING, BY FAR !!!!

Why isn't there a setting to open closed tabs from the history menu in a new tab, rather than overwriting the current tab? This is incredibly frustrating as I just lost a lot of progress on a page that doesn't autosave when I tried to open a tab I had closed a day earlier with information I needed. Is there anyway to do this with config files or something?

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.

Hi

I don't know which wrong manipulation I have done, but the "+" sign to create new tabs has disappeared.

Could you please help me to get it back ?

(I know that I can right-click and choose "new tab" in the menu, but the "+"sign is definitely more convenient 😅)

Thanks in advance ! :)

I haven't been able to move tabs around for days. Not since I tried to take some 'out' to make a new window, and Firefox straight up crashed ...repeatedly. After I gave up, I noticed the tabs no longer moved.

I ignored it a few days, but its frankly very annoying! I checked for answers & found an old post from 5 yrs ago here & followed the advice. Or I tried to, but when I checked "browser.tabs.allowTabDetach" in "about:config" it was already set to "true". I even toggled it a few times (I even tried to see if it would move when set to false! ...counterintuitive, but I figured it was worth a try?)

Anyhow "browser.tabs.allowTabDetach" is still set to true, and I'm not about to go monkeying with all that :\

(fair warning, while I know how to alter a config under clear instructions ...my experience with such things starts and ends with the config files for Stardew Valley mods)

advice I found, which doesn't work/apply??- https://support.mozilla.org/en-US/questions/1302126

The Alt-<number> keyboard shortcut is used to switch between tabs. However, the key event used to switch a tab seems to also propagate down to the content itself. This creates weird interactions:

- I switch to third tab - The web page running in the third tab actually uses Alt-3 to do something - After switching tabs the web page does something unexpected because the browser chrome didn't swallow the event during its tab-switching procedure.

The most irritating candidate seems to be XenForo forum software that uses Alt-<number> to go to different sections in its menubar. For example, alt-4 seems to open a search page and going there provides no new entry in the browser history. So, if I've tab-opened the forum to display new posts and then later I switch to it using Alt-4, it makes the content go to its search panel with no way to go back to new posts. Ironically, switching _away_ from the tab 4 does not register to the content so I can't even use the forum's own keyboard shortcuts to navigate back to new posts section or any other section. Having the forum in tab X will only ever let the forum see Alt-X and nothing else.

This all stems from the fact that Firefox lets the initial tab-switching key event through whereas I think it shouldn't. It maybe should if the corresponding tab is already active but it certainly shouldn't when a tab-switch actually occurs.

I've obviously disabled the content's capability to override keyboard shortcuts but it doesn't help in this because the content is not overriding anything: it seems to be just listening to a keyboard event that it shouldn't see.

Did I miss some option in about:config or do others see this as well?

I can not seem to find the button to open a saved, closed tab group. I have googled, and there seems to be a lot of people with the same issue. However, None of the information given under those forums provides me with a clear, easy solution. Please help.

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.