Firefox Community Forum

Firefox 140.0.2 on Windows 11 All localization settings are correct (English / US)

I like to use the Inter font where I can due to its legibility, etc. I've used it as the default font in Firefox for a long time and I have Firefox set to not override fonts. Recently I've noticed some glyphs aren't getting rendered / chosen correctly. This is just one example (a message entry field on a forum) but I've seen it elsewhere so it's not just this page. See the attached images comparing Segoe UI and Inter.

Font issue or Firefox? I'm tempted to suspect the latter since I've used Inter all over the place previously without problems and being a font, once done it's done. I've also not seen issues in places using Inter.

Thanks.

I really need help with a border around my Firefox on windows 10. I've tried every UserChrome workaround that I can find and it may be an issue at the system level. But I've never had this issue on any program.

The border: https://imgur.com/a/S1EL5Oa

-This issue is only present on my win10 desktop and not my win11 laptop. -F11 fullscreen DOES fix the issue but I don't really want it in fullscreen. -Displaying the titlebar also DOES fix the issue but I'd like it hidden. -I do have a second monitor, but I unplugged it and restarted FF. It's the same resolution. -It's not a profile or theme problem. It persists on new profiles and reinstallation.

Firefox on my Windows 11 machine does not display a bar at the bottom of the screen. This is a problem when a web page is wider than my display, there is not slide bar at the bottom to grab and pan to the right. I have not found a way to get the bar back. Is this intentional? Am I missing something?

Hi, When I play a YouTube video, there is no sound, then (I'm assuming) there is an update, and the sound returns until the next update, when the sound disappears. I have had everyone try to solve the problem, and even the tech guys don't have an answer, and yes, I get sound from Chrome. Also, when I download a YouTube it plays perfectly fine. Are you able to fix the problem?

I downloaded firefox and it worked for about a month. Now when I try to launch it, the screen flashes momentarily as though it were about to pop up, but then it does not actually open a browser window. I have uninstalled and reinstalled firefox more than once, I've tried a simple restart of the computer, and tried multiple different update methods (updated windows). Any suggestions?

Hi everyone, I use Firefox as the main browser for my iMac (Sequoia 15.4.1). Recently, Firefox has been incredibly slow. I'm able to boot up and open Firefox (140), but when I search for something or create a new window, it never loads. Is there a way to fix this? I can open the same websites on Safari, but Firefox is my employer's preferred browser. Additionally, my bookmarks are all saved on Firefox. Thanks for insights/ideas/solutions.

In early June 2025 I finally ditched Windows 10 for 11 and I've been a Firefox user since practically the very beginning of Mozilla.

Now, I notice that the "Restore Previous Session" button in the drop-down of the FF menu is missing. Additionally, I discovered late in the game that Mozilla DID listen to me and gave us the ability to "name" or "tag" an entire window in the browser. This was a HUGE boon to productivity as I'm constantly toggling from window to window to tab to tab.... Now, with the most recent update this ability seems to have disappeared....

Hi, I recently upgraded on Debian Linux to Firefox 128.11.0esr. I've begun to encounter an error in handling a login process that requires a Yubikey. Prior to the update if I logged into google or github, after the password prompt those services would request that I insert my security key, and then Firefox would offer a pop-up requesting that I touch my key. Now the behavior is that Firefox doesn't offer a prompt at the security key request screen, instead it seems that something happens immediately and automatically without my ever even entering the physical key into the USB port. Google/github then report that there has been an error in the sign in process without any input from me.

To troubleshoot I entered "Troubleshoot mode.." and tried signing in again with the same results. I've restarted my machine as well.

Ultimately, I've been able to get around this error to access my services by using alternate means of authentication. However I can't anticipate that this will be the case for all of my services.

Can anyone help me troubleshoot? Is there a log I can look to find more info?

Lately (the last few weeks) Facebook has been getting increasingly buggy and upset on Firefox. General browsing has intermittent speed issues, but in particular opening images off a Facebook page to view will freeze Firefox for 30 seconds or more almost every time, and after a while it usually gives an error about the page slowing FF down. I can close the tab, and if I go to another tab with a different website open then that works normally, but the Facebook tab is dead to the world during this time and doesn't respond to anything except being closed.

Facebook doesn't do this on Edge, and Firefox doesn't have the issue with any other websites, but Facebook now is almost at the point of being unusable.

I've cleared the cache completely, tried debugging mode with extensions disabled, and refreshed Firefox, nothing makes any difference.

All of a sudden for the past few weeks or so, I keep getting the message in the attached screenshot when entering words in the search bar and clicking on Google. This never happened before in all the years I've been doing this, so what's up with it and can it be fixed? Thanks.

when playing my game the program keeps stopping and starting. Every 7 to 9 seconds while playing my game I get kicked to the task bar and it stops responding for a few seconds and when I click to put it back on my screen and again 7 or 9 seconds I have to repeat the same thing. Bottom line is the gaming program keeps starting and stopping for a few second. This is the only program doing this. This started doing this on June 28 2025 after a new Firefox update. I played this same game on Google and it worked just fine.

Hi

cloudflare captcha is not verifying  , and You tube video not playing in firefox browser .

google chrome is working fine in same computer. Regards Prashant Gujar