Firefox Community Forum

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

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.

Steps that remove my pinned tabs from Firefox:

Open pinned web app from taskbar. Open regular Firefox browser.

Any pinned tabs that were in the browser before opening the web app are lost.

Is this already reported? I can't imagine this is intended behavior.

Невозможно упорядочить вкладки по срокам добавления, можно упорядочить вкладки только по имени, очень странно это, упорядочить вкладки по срокам добавления весьма полезная функция- займитесь пожалуйста этим улучшением

I tend to have a lot of tabs open at a time and even with the Customize Sidebar > Hide tabs and sidebar checkbox ticked, it is still distracting at times. Could you please help me find a setting/way so that I can hide it and make it re-appear when I hover on it only. Kinda like how we have on windows taskbar? Much appreciated.

This is true particularly with ChatGPT and Claude, but has happened on other tabs in the past couple of days. When I am on a different tab, and I click on a "problem" tab to view that content- it duplicates the tab instantly. If I click on "x" to close it, it duplicates again. I can close with Ctrl-W. It seems like certain tabs are "magic" tabs, because sometimes I can click the "x" to close a duplicate tab without issue. But when I go back to the original problem tab- the behavior persists. I don't really want to purge the cache for these sites, but I will if I have to. I had installed a new extension (TamperMonkey) a few weeks ago, but everything seemed fine until a couple days ago. I disabled that extension yesterday, but the problem persists. This problem existed before the latest Firefox update. I went to check the previous version number before posting (I update frequently) and it updated today.

Thank you for your help!

Bill

Hi Everyone! I am having some trouble figuring out how to get rid of these "phantom" windows. They appear after I do a sign-in to my Google or Facebook account and it opens in a new window. The windows stay open in the background, or at least my Macbook shows them as windows as if they are still open. Whenever I click on them they just go to my most recently opened tab on Firefox and never actually allow me to click on them or see the tab. I've tried looking for them in the "open tabs" section on Firefox, and it doesn't show them there either. I added a photo to show that the "phantom" window is separate from my currently open browser on Firefox.

If anyone knows how to get rid of these, I would so appreciate your help! Thanks!!!

Hello, I went from being able to reopen Mozilla and have all tabs open. This stopped happening a couple of days ago. I do not have the restore previous session as was suggested to try when I searched this topic. I went into manage history, import and backup, restore, then selected the most recent date available. At first it didn't seem to work and I started searching through history to reopen tabs one by one. I left my computer (still running) came back and all my tabs had miraculously reappeared. I checked my settings to make sure nothing had changed. It hadn't - still set to reopen tabs when opening Mozilla. Closed the laptop last night, This morning - no tabs!!! I have a lot of tabs, and groups of tabs, with info I need. How do I recover these tabs and stop this from happening again? Thank you.

Hello, on Firefox desktop I have several pinned tabs and I would like to change the order they appear in. Is there a way to drag and reorder pinned tabs, or a setting for this? Thanks.

Not sure if it's a feature or a bug, but I noticed that if I 'save and close' a tab group containing an 'empty' tab, i.e. the about:newtab page, the tab does not get restored when the group is opened again. Before I was using tab groups, I often used these empty tabs as a crude method of separating bunches of tabs from each other. I have some large tab groups, open on the tab bar, that still contain these, as I have never closed them since they were created. (They're just collapsed.) I was planning on closing them sometime, after I'd next reviewed their contents, but now I'm not too keen on that! So, just wondering, is this empty tab deletion a bug or a feature? If the latter, what's the rationale?

good afternoon! if i close browser, then reopen it i see blank tab. But in my settings checkbox turn on (screenshot 3). How resolve this problem?

Windows 11 Pro Firefox 151.0.2 (64-разрядный)

Contributor note: The screenshot shows the "Open previous windows and tabs" setting enabled.

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.

If I have a window open and open a new window without remembering to ask for a new window it overwrites the existing window. How to make it automatically open a new window?