Firefox Community Forum

My font on some sites is being forced to this horrible condensed font and it's seemingly nothing to do with my font settings in browser. Thing is, I VAGUELY remember changing a setting SOMEWHERE to actually do this, but it's not the main font setting in accessibility. Furthermore this issue has only started happening in the last day or two and my vague memory of setting my font somewhere was years ago.

Is there any other setting in Firefox that affects default font for certain sites?

[Images attached from terraria.wiki.gg in a normal tab (with bad font) and private browsing tab (with the font it SHOULD have) for comparison]

There is seriously something wrong with the way Firefox operates. There is nothing wrong with the following site so why am I seeing this message?

Be careful. Something doesn’t look right.

Firefox spotted a potentially serious security issue with news.sky.com. Someone pretending to be the site could try to steal things like credit card info, passwords, or emails.

news.sky.com has a security policy called HTTP Strict Transport Security (HSTS), which means that Firefox can only connect to it securely. You can’t add an exception to visit this site. Advanced What makes the site look dangerous?

The site is set up to allow only secure connections, but there’s a problem with the site’s certificate. It’s possible that a bad actor is trying to impersonate the site. Sites use certificates issued by a certificate authority to prove they’re really who they say they are. Firefox doesn’t trust this site because its certificate isn’t valid for news.sky.com. The certificate is only valid for: . What can you do about it?

news.sky.com has a security policy called HTTP Strict Transport Security (HSTS), which means that Firefox can only connect to it securely. You can’t add an exception to visit this site.

For the past few weeks, I have been having problems playing certain Facebook videos. It seems to only happen when I try to play a video that was recorded live. I have tried clearing the cache, I've tried a private window, and I've tried safe mode. I still can't get the video to play. However, when I copy and paste the url to Safari, it works fine. I have been able to play "live" videos while they are actually "live"; it's just that they will not load when I try to play them later. I don't have any problems playing videos which have been uploaded to Facebook; only those which were recorded live. The videos just show a circle in the middle as if they are trying to load but nothing else happens. The length of the video does not matter; it happens with short videos as well as long ones. The screenshot image (of a random "live" video I found) I am uploading shows a partial black circle in the center, which is a spinning circle in realtime. I have circled it in red.

This device is essentially a thumb drive made by MOPAR that contains automotive serve diagrams for a Jeep Wrangler. When you boot this device with Firefox being the primary browser you get garbage instead of schematic drawings. If I make Edge the primary browser the card boots properly and runs. This a legally obtained card with no password system on board.

I've been relying on backup/recovery from backup because firefox now deletes my profile/session every time it does a meaningful update (several times a month).

Now, one stupid/broken thing is that I have to re-enable backup every time I restore my profile/session (this setting, backup ON, should be included in the profile/session!).

The second broken thing is that now I can't re-enable backup today, after yesterday's update.

I can fakely turn backup ON, but when I click "backup now", I always get "Hmm, there was a problem backing up. Learn more"

Learn more has no useful information. Waiting a few minutes, like it suggests, does nothing. Now, I'm going to get my profile deleted the next time firefox updates, and I won't even be able to restore from backup.

Finally, whoever's in charge of this feature needs to learn English. Log in is a verb, login is a noun and an adjective. Similarly, back up is a verb, backup is a noun and and adjective. You can't "backup" your profile. You BACK UP your profile. A backup is a noun. You can't do nouns. You do verbs. I back up my profile. I back up (verb) the backup (noun) in a backup (adjective) file.

Hello,

I recently opened Firefox and noticed that all my data (bookmarks, saved passwords, and history) is completely gone. I didn't make any changes or delete anything myself.

Could you please help me understand what happened and how I can recover my lost data?

Thank you.

I run normal firefox on linux. Fully up-to-date. Every time I quit the app, it reverts to a version of my profile from a month ago, and loads all the tabs I had open then, and then receives all the tabs that I sent to the device in the interim (~1 month). As I speak, it just caught the 60 or 70 tabs in this window.

I tried changing the name of my profile folder to randomstring.defaultOLD and changed one of the backups to randomstring.default. This didn't change the behavior. I'm still stuck in the loop. I saved my tabs with onetab, because firefox isn't remembering my session anymore. I thought it was something to do with updates, like it only loses its mind upon updates, but that's not true. It thinks it's updating firefox EVERY TIME, because the one time it's loading to 1 month ago it was updating, but I'm 100% sure there are no updates to firefox in my linux. It's just hallucinating.

The articles on restoring from backup are outdated. They say to use an html file. There is no html file. It's just folders for profiles, not html files. HELP!

I have spell check turned on in setting to check as I type. And yes I have two dictionaries downloaded and installed. But as I am working inside a program and I have to enter data into a text field, if I want it spell checked I have to right click and then click on Spell check for every field that I enter text into. For a while last week it was working without having to do that, and I had done nothing to make it happen. It was nice. Since then I realized I want spell check on. But I can't figure out how to set it so that it turns on for every field that I click into to enter text. Any ideas?

I had multiple tab groups which I had chosen to save and close. These tab groups have now completely disappeared and I cannot find them. When I began using Tab Groups, I had checked and there was no information stating that unopened tab groups would be deleted. I want these groups back. If I had known Tab Groups would disappear, I would have saved my tabs into a folder. The only Tab Groups that show up now are under "Recent tab groups". If tab groups are going to be deleted after a set period of time, it should be stated clearly in the tab group settings. It would also be really useful to archive them into a bookmarked folder so people don't unexpectedly lose hours of research.

For the last few days after an hour (or so) of use, browser windows try to load but don't finish. I checked the Mac activity monitor and see that FirefoxCP webextensions is hogging memory--8GB! MacOS 26.6.2, Firefox for mac 154.0.1. Did the same thing for MacOS26.5.2. Is AI doing in performance? How can I find what to turn off?

Whenever I turn the free 50GN Firefox VPN on, regardless of the set VPN location, my connection immediately cuts. I've tried refreshing Firefox, raising and lowering my security and DNS over HTTPs settings, clearing DNS cache, and updating Firefox, but none of these attempts fixed it. I can tell its the VPN since everything will load again after I turn it off.

When I had my DNS over HTTPs set to default, it used to say I was connected to cloudflare, but after trying the VPN with it set to off or custom, it now says "DNS over HTTPs is off" when set to default. When I turned on the VPN while the default setting was on, it gave me an error message regarding cloudflare that I can't remember or recreate now that the "DNS over HTTPs is off" at all times. It will only say I'm using cloudflare on the custom setting.

I had a similar issue to this issue a couple months ago, but I resolved it by putting my security settings to default. This time, it seems to be a bit more complex than that.

Hi Mozilla team,

I’d like to report a serious issue with Firefox lately. The browser has been performing very poorly and frequently becomes “Not Responding.” In many cases, websites fail to load properly or get stuck indefinitely, even though my internet connection is working normally.

I’m experiencing these issues on the latest version of Windows 11 with the latest version of Firefox. This has become quite frustrating and significantly affects my daily browsing experience.

I hope the Firefox team can investigate these stability and website-loading issues and provide a fix soon. Firefox used to be much more reliable, but recently the overall experience has been very disappointing.

Thank you.

My Desktop - Win10, 260+ Gigs RAM/14+ TB HD space Firefox updated a couple of days ago, and again today (this time to 155.0.1) Ever since . . . . . . Having Major problems NOW No Rt-Clk function in Ff Ff menu buttons non-functional Ff tabs can no longer be rearranged Data entry fields, dropdowns, Submit buttons, & "add to cart" buttons not working on Ff pages -Things I've tried; I rebooted Ff & Windows several times each - No Joy I cleared Ff startup cache twice - No Joy HELP! I use Ffox for roughly 85% of my online activities - I'm pretty much hosed

PLEASE HELP!

Started OBS Vitrual Camera option. in Firefox the camera is no listed.

https://webrtc.github.io/samples/src/content/getusermedia/gum/

only shows phyiscal cams.

How can virtual cameras listed in Firefox?

``` $ v4l2-ctl --list-devices --all OBS Virtual Camera (platform:v4l2loopback-000):

       /dev/video0

SandbergCapture: SandbergCaptur (usb-0000:07:00.0-1):

       /dev/video1
       /dev/video2
       /dev/media0

```

but OBS Virtual Camera is not listed

The recent changes to the right-click menu on YouTube are a backward step. The menu is now cluttered with options I don't use, while the useful “Open in New Window” option has disappeared. I regularly use this function and having to use Shift+click instead is unnecessarily inconvenient. Please consider restoring “Open in New Window” to the context menu. Not every new feature is an improvement, and sometimes the simple, familiar options are the ones users actually want.

Can you please enlighten me on the internal protocol FF follows when downloads are set to "Always ask you were to save files"? I want that dialog to always default to the previously used folder, but it only does that about 70% of the time (in my guesstimation). The rest of the time it randomly decides it doesn't want to do that and it will pop up the Windows Downloads folder instead.

Sometimes it will do that even right in the middle of a mass-download session where I'm downloading, say, 15 items, doing the right-click/save thing, and after 10 items in which the Save-to dialog has defaulted to the folder I want, it will suddenly decide that it wants to go back to Windows Downloads, and because I'm on autopilot with my keystroke routine, I might go through all 5 final downloads before I notice that it's not saving to the right folder anymore. This is EXTREMELY annoying.

What prompts my current post is that I've just started another session of about 10-15 downloads, but this time I'm five files in and FF is still refusing to default to my desired folder. It's not uncommon for it to take two tries before the folder I want sticks, but not five. It's now officially way uncool to continue navigating there every single damn time.

So please tell me why this happens.

And no, please don't recommend that I temporarily change the default downloads folder and just set it to permanently download there, then change it back to "Always ask" after each session. First, that's an unworthy kludge. Second, I always change the filenames of downloaded files--if nothing else, I always remove underscores or spaces to conserve filename length because I've been severely bitten by that limitation once too many times. Therefore I must use the "Always ask" dialog. It's why I don't usually use Downthemall, fab piece of software though it be.

TIA. NB: https://support.mozilla.org/en-US/questions/1591345 is a similar question but answer offered no help. Also after 5 more file downloads during my current session in which FF continues to never default to the previously used folder, I've just given up and stopped downloading for now.