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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 have Firefox's New Tab set as my home page, since I'm choosing to divorce myself from political doomscrolling for the next four years. The New Tab page is perfect for having frequently visited sites at the top, Pocket stories I can curate in the middle, and what used to be a history of articles and sites I've read most recently in "Recent Activity" along the bottom. Within the last few days, "Recent Activity" has been blank, and will no longer keep track of articles I've recently read. I've tried clearing the browser history and cookies, and it came back for a moment, but quickly went back to being blank. And the major downside to clearing the browser is that my four rows of most frequently visited sites gets wiped clean also, and I have to spend time getting them back on the list. I do not have Firefox set to automatically clear history upon closing it. I've tried turning "Recent Activity" off and on with the page's Settings (cog in the bottom right corner). I'd really like to have this back, as it can help me find recently read content (especially Pocket content) easier than wading through the History log. Any help would be appreciated.

I can't log into my ATT email an the new Mozilla, I get an error message. But I can login from a Mozilla Private Window. I can also sigh in on Chrome and Edge. Just not Mozilla.

How can Mozilla fix this? Or how do I get this info to them so they can do repairs. It's not an ATT issue since I can login elsewhere.

Win11 Firefox 138.04 It appears some of the shortcuts on the Newtab page are preloading somehow.

Where are these coming from? Sidebar is off. I have all preloading off, all suggestions of every sort off, any predictive anything off.

I am not experiencing this on my win10 machine.

How do I stop this?

Using this digital card https://www.sendoutcards.com/act/XNBFQFHHNO , the images are squished together instead of displaying correctly on inside left and inside right. On other browsers, like Chrome , Opera, and Edge, they display correctly Why?

My twitch website tweaking, youtube tweaking then sometimes the home page is tweaking things are very glitchy and what not. i love firefox cz its open source but these wearid issues kinda make me always switch back to chrome from time to time

For the longest time, I was frustrated that Firefox didn't "remember" saved passwords. I finally figured out that there was this toggle that kept Firefox from saving passwords unless I was logged into Firefox. Since I'd already logged into Firefox three times that day (when my Dell gets bogged down, it developes an odd habit of delaying response to my scrolling, and then taking it as a click on the "close" button), I unchecked the box. Tonight, I was looking for something else in my settings, and noticed the "Require device sign in to fill and manage passwords" was checked. I unchecked it, went back to looking for why Firefox wanted me to sign in when I was just trying to sing into an unrelated site, came back to "Privacy and Security" and "Require device sign in to fill and manage passwords" was checked again. No matter how many times I uncheck the box, if I click away and come back a few minutes later, it's checked again. Why? I've got to jump through SO many hoops EVERY time I open the browser to use the "save passwords" feature, I may as well not even have the feature and just use my spreadsheet for everything I can't remember.

I recently downloaded Firefox and would like to use it as my primary web browser (M1 14" Macbook Pro). But my Google calendar web site is not showing any colors, making it hard to use. On my other browsers (Brave, Safari, Edge) it works fine . See screen shots below from Firefox, Safari, Brave. I have tried re-booting Firefox, the computer, reverting the Firefox theme back to basics etc., and searching on line for a solution, but I can't find anything. So far all other websites are working OK, except for 1 other that has partially the same problem. If it can't be fixed I'll stop using Firefox, which I otherwise like.

Thanks for any help.

I cannot get my Dashlane extension to work with Firefox but it does work fine with Chrome and Edge so it is not a PC problem on my end. Until this week, it worked just fine. After updated my browser, I can no longer successfully log onto my Dashlane account. I first get a screen asking for my log in email. Once entered, a screed appear with "Performing a security check." This is the point were normally a Captcha screen would appear. Instead, the next screen to appear is "something went wrong. An unexpected error occured during the security check. Please close this tab and try again.". I click on the close this tab button and am sent to a log in page for Dashlane that requests the verification code that was sent to you contact email. No code arrives although I have gotten emails from using the other browsers so it is not a case of blocked emails. This is obviously a security issue but I can't resolve it. I have listed Dashlane as an exception under Cookies and Site Data to allow cookies. I also made it an exception for enhanced tracking protection. No luck. Using firefox 138.0.4 (64-bit) on Windows 11 Need help please!!

Hello,

NVIDIA RTX Video Enhancements are not working in firefox at all. By not working, i mean neither Super Resolution neither HDR enhancements work at all, not even the badge shows up, and the NVIDIA app reports the status as "inactive". The video is not upscaled, and the content isn't getting put into HDR. It is on globally on my system, and does work on all the chromium based browsers installed on my system, even on the discord app itself.

I tried a latest firefox fresh install, with youtube playback, or just opening a video file directly with the browser. This worked on chromium browsers, but not on firefox.

I'm on windows 10 64bit with a 3060 gpu. (the only gpu in the system.) I have 4 monitors connected, but still get the same issue with only one. Hardware decoding is force enabled, and about:support reports that hardware decoding is supported for H264, VP8, VP9 and AV1 too. I even get the same amount of video-decode usage in task manager on both chromium and firefox while video is playing.

Thanks in advance.

On Facebook, or other websites that have a text enter box that appears on the bottom, my keypad covers it and I need to scroll up to see what I've typed in and it Zooms back up to cover the text box as soon as I input a key. Whats going on?

When I open a video in fullscreen mode, the Windows taskbar blocks the video controls at the bottom (as shown in the attached screenshot). I’ve noticed this issue only occurs in Firefox — it doesn’t happen in other browsers. I’ve already disabled all add-ons and started Firefox in troubleshooting mode, but the problem still occurs.

Hi Guys for the last week when I add HTML to my ebay description it will not save. Ebay have assertained its a Firefox issue and it started around the upgrade of 18th May.

Any help would be appreciated

Thanks

Hello, when opening a video on YouTube in full-screen mode, the horizontal scroll bar becomes visible if you start moving the mouse cursor or scrolling. This doesn't happen in other Chromium-based browsers, where the scroll bar is always hidden (in full-screen mode). I tried deleting all browser data, but it didn't change the situation, and I couldn't find any solutions on the forums either. This looks very unattractive and ruins the video immersion. I hope you can help me resolve this issue or release an update that fixes it.

Thank you!

Hello Firefox devs,

First of all - great thank you for this alternative to the status quo.

So - this started some months ago and I thought Youtube implemented some sort of protection so the music sounds obviously different and worse than the original.

But now I played some MP3 files directly from the computer and then played them on VLC player.

Man, I hadn't listened music peacefully for months, because I usually listen my Youtube playlist and it sounds horrible.

Now on the VLC it sounded as it should be and it was a pleasure to listen to, while on Firefox it was s..t

Basically it skips beats, changes tempo, it's subtle but obvious and makes listening music a horrible experience.

The OS is Debian 12 - bookworm, the firefox was always the latest in all these last months, I let it update when it needs to.

It's in virtual machine, but so is VLC and there is more than enough CPU to play a song.

What could it be, is it just me who experiences this?

Thank you for your time.

https://support.mozilla.org/en-US/kb/https-upgrades SSA says Firefox will "upgrade" me, but their provided link doesn't go anywhere helpful. I tried doing several things I found on the help page https://support.mozilla.org/en-US/kb/https-upgrades "Firefox connection upgrades - HTTP to HTTPS ", but I still get this "Forbidden Access".

I have tried to contact SSA (left an e-message) and will keep trying, but my God, they were impossible to get by phone even before Trump and Musk cut everything, so I'm not going to even try that. Can you help me?

After a recent update, certain websites (like Youtube) leak script that remains even after the tab is closed, until Firefox is closed. When one of these websites is accessed for the first time, a second tab opens and quickly closes, as if a popup was blocked. One way I can observe this behaviour is that the NoScript extension will detect script for that website on ALL tabs, even blank ones, with the "(sidebar?)" annotation. With Youtube I managed to prevent this by disabling Service Workers in about:config, but for example with tenor.com the behaviour continues to occur even then.

Websites I observed this behaviour on so far: youtube.com (until Service Workers were disabled) tenor.com nami.news

Is this a bug? I have also observed the same behaviour on a different PC for Youtube until I disabled Service Workers on that installation. What should I do?

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

I am looking for a way to adjust the settings, or really anything else, in a way that would result in the site being displayed like it should be because it is a rather integral part of the game and I really don't know where else to look anymore. Now, I suspect that it's because I switched to Ubuntu because I've never had this issue with Firefox while I still used Windows, but I really hope there's a way to resolve this. That being said, it seems to be specific to Firefox for Ubuntu because the colors show up in the menu when I use Opera on the same OS.

The four images I've added should show what I'm talking about (I really don't have a way to phrase this any better, sorry) and I really want Firefox to display the drop down menu like it is supposed to look: the colors themselves underneath the text. (it looks like Firefox on mobile now if that is any help in figuring out where to start, but I don't see why it would fail to show the site correctly on desktop)

The part of the site in the first two pictures is accessible without an account: Scrying Workshop

Edit: It occurs to me that I probably should list what I've tried already. - disabled enhanced tracking protection - checked my settings (colors are not overwritten) - tried it with a new profile - disabled all extensions - reinstalled Firefox

Samsung S25 Ultra Android 15 Stock Rom Firefox v138.0.4

Firefox cannot play jwplayer streams and any other auto quality streams (youtube working) Always this error (This video file cannot be played.(Error Code: 102630) tried everything possible Drm content enabled Remove all my addons Reset all my settings But still no luck...

On Chromium-based browsers works Gecko-based browsers not working...