Diễn đàn hỗ trợ Firefox

New addons on Firefox become blank on restarting the browser.

They return when I manually disable and enable them once.

How to fix this? Doesn't happen to older addons.

It's a bit weird, I got the thing you get when you migrate to a new browser - asking if you'd like to migrate history and bookmarks. I closed it because I've used Firefox for years.

When Firefox opened proper, I got a tab asking to restore the previous session, along with a "Welcome to Firefox" tab. As well I got a few popups for other things, basically just stuff you see when you open Firefox for the first time. A couple of extensions opened up a landing page that should only open when you first install them.

All my bookmarks and browser history is there. The settings have all been reset to default. The extensions are there but all of their storage seems to be gone, like my dark reader extension no longer has the exception sites on it. Ublock has the ad count reset and most importantly all my custom rules are gone! I have spent years making hundreds of custom rules, and quite a few took hours to get right. I am sad about losing that.

Does anyone know what might have happened?

When I was looking at my about:config to see I saw these things in the modified settings.

there's quite a few settings here and IDK which are relevant. The ones in the pictures where just the first couple and I show them because they seem to have something to do with this situation "auto migrated" - when it seems like the browser did this because it thinks it migrated, the first screen I got was asking if I'd like to transfer my bookmarks and history (and good thing I closed it,or it might have deleted those too).

After a recent update, I noticed that my toolbar changed suddenly. I was able to rebuild it how I like and most of it stays, however, the "Open A New Tab" button refuses to stay where I want it.

Whenever I open a new window of Firefox, the "Open A New Tab" button is found on the leftmost side of my screen beside the new tabs. If I go to the "Customize Toolbar" page, I am able to move it so it stays to the right of the rightmost tab, which is where I want it to be.

Anytime I open a new window, whether it's through dragging a tab onto another monitor, or opening Firefox the first time after turning on my computer, my change gets reversed.

How can I permanently move this button to the desired position?

This did not become an issue until an update about a week or so ago.

I haven't upgraded browser versions for a while and I'm now going from 109 to 132. Pretty bad I know.

I'm having a number of issues but for this post I'd like to concentrate on userChrome.css.

In version 109, I had a custom font for the top menu bar, the top menus, the bookmark toolbar, the bookmark toolbar menus, and the right click menus. I did this by including the following in userChrome.css (as per [https://support.mozilla.org/si/questi.../1335097|here]:

1. navigator-toolbox { font-family:"MyFont" !important }

This worked great, but it is no longer working in version 132. Obviously I don't know in which Firefox version this stopped working.

Has this been disabled by Mozilla or has it been changed? If it's been changed, how can I achieve it now?

I'm very grateful for any help!

using Firefox Developer Edition Version 130.0b5 (64-bit)

https-only mode is enabled for all windows enabled, with a couple exceptions. one of those exceptions is www.bom.gov.au , which does not support that mode. anytime someone tries to open a page from there in said mode, leads to a page that redirects to it's homepage, highlighting that it is unsupported, and changing from any specific url to the redirect url.

in the past it worked well to have this page listed under the exceptions for https-only, always loaded without a hitch. but now it's treating the page as not an exception. i've removed it from the exception list and tried loading, re-added and tried loading, but the result is always the same. can anyone please help?

A new version of the "List All Tabs" appeared on my toolbar today, shown on the left and hovered over in the attached screenshot (ignore the Malwarebytes extension icon). The old icon for this button was a chevron with approximately the same functionality. I was able to remove the old icon, but I'm unable to find a way to remove this one. Here is what I've tried so far:

• Like the old one, the Customize Toolbar feature is unable to remove it since it is grayed out.
• For a while, I was able to remove the old icon by going to about:config and setting browser.tabs.tabmanager.enabled to false. This solution does not work for the current and some recent versions of the button.
• I attempted to create a userChrome.css file (following all the steps according to this this website) and added the following string: #alltabs-button { display: none !important; }

None of these attempted fixes have removed the button following a browser restart. Is there a way to remove it? I have no need of a button that shows me what tabs I have open when I can simply look at my toolbar.

In firefox developer edition, when opening a new window of any kind, or when relaunching/opening the app, the new tab button always ends up on the left hand side. Going to the customization menu, I can move the button to the right side (next to the last tab), which is where I prefer it, however when opening any new window the button goes back to the left side

After finding out Firefox was storing over a gigabyte of cookies, I figured it might be wise to set it up to clear them except for sites I used regularly. However, I've recently noticed that Youtube will clear regardless. I've tried entering the domain both as youtube.com as well as www.youtube.com, but my video display preferences aren't retained. This doesn't happen for other sites, like Reddit or Tumblr. What do I need to enter in the exception list to keep my settings?

I just switched from Ubuntu 22.04 to Fedora 40 and copied my files over, including my Firefox profile and KDE settings. I have hit a few snags, such as that the language setting is totally ignored, but the most annoying is that the addess bar stopped autocompleting URLs I type and instead just flickers the suggestions popup away whenever I type. I tried troubleshooting mode and for every new tab the autocomplete works once but once I type the second letter it flickers the suggestions away again and doesn't work. To me it looks like the issue is that the suggestions popup maybe messes with the window focus as I noticed that menus and such seem to be implemented as borderless windows in Firefox. I also tested it in about:home using the search box there (which redirects your input to the address bar) and in there the first typed letter also autocompletes and after that each new typed letter just flickers the suggestions away for a split-second.

Incase it helps, I installed firefox-dev from the4runner's COPR "firefox-dev"

my extensions got unpinned and the new tab button is gone, the tab overview is gone, the extension button is to the left of the address bar, the back and forward buttons are to the left of the address bar, the back and forward button are swapped, WHY.

In the screenshot i pinned the 3 extesions i use again, they were unpinned before

Hello,

Just today my UI elements went missing. For example I cant see my bookmarks on the bookmark toolbar, new tab sign disappeared. Addons are not the issue, I have refreshed multiple times with no addons installed. The bookmarks are all there, except somethings messing with the firefox. Started in safe mode, but in vain. Checked the group policy in the registry but nothing out of the ordinary. I deleted the policy, did a fresh install and still the problem persists. Tried switching hw acceleration on/off as well.

Any help is appreciated, I never had any problems with firefox before.

i have m2 mac book air with 15.1 Beta (24B5035e) OS when i try to download firefox for my laptop it always defaults to 64-bit version not arm64 version due to this i am facing multiple performance issues. I searched online but it seems that no one has my problem. I like to use firefox but i am not able to.

I've been seeing this more and more, but my toolbar will change by itself every restart. The add tab button will shift all the way to the left or not appear, the bookmarks won't appear, etc. I'm not sure what can be causing this, and I saw no way to "save" my current configuration other than pressing the done button upon using the custom toolbar, which I had done every time prior to fix my configuration. Does anybody know why this is occurring, and a possible fix? Thank you

After an update of both macOS (to macOS Sequoia 15.0.1) and Firefox Developer Edition (to 132.0b3 (aarch64)), the Bookmarks Toolbar stopped working. The same issue appeared on my Windows PC.

Bookmarks toolbar is visible, I can show and hide it but it does not display any of my saved bookmarks. Luckily, they were not deleted and I still can access them via Bookmarks Menu, which is less than optimal.

The Drag&Drop functionality does not work either. When I grab the opened Tab, drag it on the Toolbar and release it, the Tab gets opened in the new browser window and it's not saved.

I'm using Firefox Developer Edition 132.0b2 (64-bit) and noticed that the only way to open a new tab is to click on the pancake icon and select new tab. The "+" icon in the tab bar is missing.

I also noticed that there is no way to reload the page (especially doing a hard reload). This is a major issue when making updates to websites and wanting to see those edit. Clicking in the address bar and then on enter will reload the page, but does not do a hard reload, so the cached version of the page is displayed, not the updates.

Hi,

Firefox Developer Edition 126.0b7 (64-bit) shows a perpetual "Loading" screen when trying to access my internal Logitec Media Server at 127.0.0.1:9001.

Other browsers like Waterfox Classic have no trouble, so LMS is working fine.

I tried cleaning the cookies, disabling the firewall (Windows 10), that did not help/

Any idea how to solve this?

Thanks.

Every time i update my bookmarks are removed and my extensions which I pin get unpined I can´t even open a tab without using settings. I need to reinstall my browser.

I need help.

I am using latest firefox developer edition. After firefox updated automatically, I found that I lost toolbar customization settings. I reconfigured everything, but the next day when it updates I lost the settings again. It seems that there is a bug in Firefox. How can I fix this? If this is a bug, when will it be fixed?

1. Close Firefox (FF) with some tabs open 2. While FF is closed the websites are updated 3. Open Firefox, tabs reopen 4. Go to tabs

Expected: Tabs should the latest version of the website (ie the page has been refreshed)

Actual: Tabs are showing the old, previous (cached) versions of the website and not refreshing to show the latest

User has to manuall refresh each tab to see the latest version of the page

Are other people seeing this issue?