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the tab groups feature doesn't work. WHen i drag one tab onto another, nothing happens, other than the tabs go back and forth. Can't put one tab over another and no group is created.

I had a Firefox update yesterday, April 29th. Since then, my Bookmarks sidebar no longer opens automatically when I open my Firefox browser. I have to go to the sidebar icon at the upper right of my screen to open the Bookmarks. I went to my settings, and the box for automatic opening was not checked. I checked the box, and it still does not function. Any ideas as to what the problem is, and what the solution could be?

Hello,

I recently updated my Firefox browser to the latest version, 138.0.1 (64-bit), on Windows.

After the update, I noticed that when playing videos in fullscreen mode (for example, on YouTube or other video websites), the Windows taskbar (the bar at the bottom of the screen with the Start menu icon) does not hide automatically. This is affecting my fullscreen viewing experience.

Before updating to version 138.0.1, the Windows taskbar would hide correctly when entering fullscreen video.

I was wondering if anyone else has encountered a similar issue with the Windows taskbar not hiding, or if there are any suggested solutions to help resolve this problem.

Thank you for your help!

Just recently, the Bookmarks sidebar quit appearing automatically when I opened Firefox. In each new window, it can be selected manually.

I posted this thread under "Privacy and Security" because other threads on the Internet (some quite old) say this issue can be fixed by changing the Browsing history settings. I tried that, but got a strange result: the Bookmarks sidebar did appear automatically, but the webpage I was on would not display any images embedded in the page. And then I wondered: why must I eliminate Browsing History just to automatically display my bookmarks?

Any help would be deeply appreciated.

I use several browsers and when it comes to functionality I consider FFox to be the best however with 1 major drawback - it's speed / lag issues which is why I stopped using it as my primary browser and only as secondary one

I can have 2 different Chromium based browsers open simultaneously and while this impacts the performance somewhat if I open Firefox and another browser responsiveness grinds to a halt (sometimes even crashes)

Even just starting Firefox by itself takes 5x as long as other browsers

So I'm wondering is Firefox just more resource intensive or is there something wrong with my setup?

The main difference between my Firefox install and my other browsers is the number of Bookmarks (10000s) due to me having it installed for much longer so is it possible for a large number of Bookmarks to slow the browser down even when not open ?

Other possible causes I read elsewhere are 'Cookies and site data' (currently around 50mb)

I clear the 'Temporary cached files' & 'Browsing history' on regular basis so they shouldn't be an issue

The add-ons I have installed are NoScript , Ublock Origin & Firefox Color

In regards to troubleshooting is it possible to install a 2nd install on the same system simultaneously without overwriting the current one ?

Thanks

Despite Tab Groups not yet being "rolled out" in Australia, I am wondering if "Container Tabs" will still be Supported (in the following ways):

1. Will Container Tabs still be able to be used effectively in concurrence with Tab Groups? 2. Is it planned that Tab Groups is being developed to replace Container Tabs? 3. If one will be able to use Container Tabs concurrently with Tab Groups, can different Container Tabs Types be split over different Tab Groups? 4. Is it planned that Tab Groups will supersede Container Tabs in terms of Protection, Privacy, etc.....? 5. Will Tab Groups be able to be put to sleep/hibernate in order that Firefox "speed/memory" is not effected?

Whilst on the subject of Tab Groups and Container Tabs: 6. Up until a few updates ago, when the mouse was hovered over a Container Tab, a dialogue box would indicate: the Tab Subject, Site Identity and Container Tab Type. Please bring back the Container Tab Type when the mouse hovers over a Container Tab..! 7. When this (Valuable) information was ceased, the only way to get similar information - namely the Container Tab Type - has been to use the: List all tabs icon {tab icon 2} at the Right hand end of the toolbar. It is a blessing that this was not changed, but still a bit of a nuisance to check them both! Why is this an issue you may well ask? - I am sure I am not the only Firefox user (Forever) - with memory decline!

Thanx

After Update to 138.0 my sideabar (bookmarks) is away. I can reactivate the sidebar on the left side as wished. But when I open a new Firefos Window or Tab the sidebar ist away again. What have they done, mozilla ?? How can I get mey bookmarks ALWAYS shown on left side of any Window or tab ?

I love your review checker. All of a sudden it is off. read and tried your instructions but still can't find it. on amazon looked for dollar sign to turn on-- never saw it. im. on mac, system macOS Monterey 12.7.6 and firefox says its up to date-138.0.1

I have no idea where the ad blocker is here on Firefox and cannot turn it off when I need to. It is crazy that it is so difficult to find AD BLOCKER - I find articles that say how to do it but they make no sense because I try to follow and it still does not work. I need to know how to turn off the ad blocker - especially when I want to use Rakuten - I cannot never use it because I cannot manage my ad blocker when I need to

Is it possible to restore firefox to a previous version to recover all my data? After update, all my firefox pages, tabs, bookmarks and history have vanished. Please help me recover or restore. Thank you!

Starting this morning, I am constantly receiving pop ups supposedly from Mozilla regarding viruses. It says "click here to fix the error" Are these legit?

I have run my anti-virus and malware and they show nothing. I also have pop ups blocked.

For some reason, IDM will not work in Firefox/DuckDuckGo. even though it worked a couple of weeks ago. I contacted IDM support who have tried everything they have, but no change.

Here is the issue: 1. I open Firefox (Duck Duck Go is my default) (132.0.2 (64-bit) 2. I type "vintage sci fi movies" 3. Click on "videos" 4. Pick any movie (example: The Phantom Planet (black and white but this does not matter) 5. In the Choose How you Watch, I click the left icon - Watch Here, and not Watch on YouTube; also click Remember my choice 6. The movie starts but there is no IDM dialogue 7. If I then click Watch on YouTube inside the movie, it switches to YouTube and the movie starts, AND the IDM dialogue pops up.

As I said, this worked in Firefox/DDG a couple of weeks ago.

IDM version is 6.42 Build 23, full (paid for) version Oct 15 2024 The IDM Integration Module in Firefox shows as Version 6.42.22, last updated Oct 28 2024.

Can you assist please.

I cannot make fire fox work at all.for me. I need the file, edit, history, bookmark tool bar back. I'm pleading with you. Please I BEG you to uninstall the upgrade. Please let me have the Firefox I had last week. I,m 88 and will die before I ever!!!! i can't make anything work.I have over 5,000 bookmarks. I write for a few dollars to partly support myself. Right now I'm out of business. Where is the invisible email address? I have been using FIREFOX since it came out. i can't go through your circus. A browser should have a high degree of instinctive coordination, it shouldn't be similar to experts cryptic calculus level, when your totally unfamiliar with the level of calculus I'm sorry, I won't be able jump through hoops..

I ran into a glitch in another program, and as part of trying to fix it I rebooted my computer. On doing so, I find that the VAST majority of the tabs I had open in my main browsing window have disappeared - some of them out of tab groups I'd created to avoid losing the tabs in question. Neither tab history nor browser history show the missing tabs.

What gives?! Is there any way to restore the window as I had it, say, yesterday?

DO NOT COPY AND PASTE! This is not written correctly! Someone please help with this or correct the code. I tried different ways to do this and nothing works ---- I am beyond frustrated with it.

Security features warning

You may see a warning that “some of Firefox’s security features may offer less protection on your current operating system”.

The sandbox in Firefox makes use of unprivileged user namespaces when creating new processes for enforcing more security. This can be considered a security risk, therefore some Linux distributions have started to restrict its usage and only allow it to work where there is an AppArmor profile.

Such profiles can only cover a limited set of installations paths, including Snap and Debian packages. They cannot however cover some other use cases, such as tarball installations as well as local development builds.

To create an AppArmor profile for Firefox:

In /etc/apparmor.d/, create a file with the name firefox-local

In the file, add the following:

1. This profile allows everything and only exists to give the
2. application a name instead of having the label "unconfined"

abi <abi/4.0>, include <tunables/global> profile firefox-local /home/<USER>/bin/firefox/{firefox,firefox-bin,updater} flags=(unconfined) {

   userns,
   # Site-specific additions and overrides. See local/README for details.
   include if exists <local/firefox>

}

Replace <USER> with your Linux user name. This assumes the Firefox install is at $HOME/bin/

Once you have saved the file, run sudo systemctl restart apparmor.service in the Linux terminal.

I am using 138.0.1 (aarch64) on a Mac. The new tab feature simply does not work. When I place one tab over another, they simply scoot around one another to make space; no new tab group is created. Any ideas? Thanks.