I-Firefox Community Forum

I'm not sure what update it was but, new system so I had to go into setting and set things how I like. I cant remove options from additional search engines in settings. This used to be a normal feature. It is no longer one. I want to know how to remove them. Not just disable them, it is not the same. It's fine, If I have to manually recompile the browser to get this done. I just don't want them there. On version 155.0a1 on Arch Linux.

Any constructive help would be greatly appreciated.

Out of nowhere, the Nightly browser starts with Windows & a new profile. This forces me to go to Settings to uncheck the setting for Nightly to start when I start Windows.

First, the setting "Open Firefox automatically when your computer starts up" should never, ever be checked by default.

Second, this has happened on both my Win11 computers with Nightly. What is concerning is that somehow a Nightly update out of the blue created a brand new profile--I have a specific profile I use for my Nightly installs--with the start with Windows startup setting checked. This should not happen even with an alpha app like Nightly. The update process should only be using the profile running when the update process takes place.

This forces me to run the Firefox Profile Manager to delete the profile that was created out of the blue.

Honestly, if this is not addressed, I will have to stop using Firefox, Beta & Nightly. I have Firefox since it first was pre-version 1.0, but I refuse to use an app that thinks it is acceptable to make default a setting like Start with Windows startup.

Youtube seem to be having problems with video decoding, previous frames seem to be displayed from time to time. for ex, this video: https://www.youtube.com/watch?v=dFhzMEnCEhY

The same profile works on Firefox 134.0b8 (64-bit) without problems, but not on nightly. If I just disable `media.hardware-video-decoding.enabled` and restart, then the problem goes away on Nightly.

Enabling/Disabling my user customizations don't seem to affect it. Enabling/Disabling addons don't affect it. Using a new empty profile also doesn't affect it, the problem persists. I tried deleting "gmp-widevinecdm" folder and redownloading it, still didn't solve the problem.

I seems to be some sort of regression, it used to work before a couple of days ago. Please fix, I hope the information I provided helps, as I like having hardware acceleration.

I also tried to update the display driver. nVidia Driver: 31.0.15.5176 now 32.0.15.6636

Hello!

I use Nightly 154.0a1 (2026-07-10) (64-bit) on Windows 11. I'm trying new VPN feature from study and the VPN itself is working, but the location setting is completely broken. I have only two options for location Recommended and United States. Whenever I choose United States, nothing changes and my IP is always from subset of CIDR 63.245.208.0/20 which is geolocated in London, UK. I tried multiple IP addresses (by restarting VPN) and all of them are geolocated in London. Running traceroute also suggest that all of them which I get are located in the UK. Is there a way to fix this?

My Firefox browser (nightly snap 154.0a1 on Ubuntu 24.04) has been misbehaving lately (~2 weeks now) and I'm at a loss why.

First, when I scroll using the mouse wheel, the scrollbar continuously shoots back to the top constantly during scrolling.

Second, when I type text in a Google box and hit enter key, it drops to the next line - like one would expect in a text processing application.

Third, when on YouTube, trying to rewind/forward video instead starts navigating to clickable links. Of particular note (see the attached screenshots) is the appearance of text (such as "Skip navigation" and "Volume" to name a few) - something I've never seen before.

This happens with a new profile as well.

Now, I know that nightly will sometimes have broken items but this is a weird one. I at one time thought the batteries on my wireless keyboard could be responsible but new batteries (confirmed new with a digital multimeter) did not change that.

I'm on Ubuntu 24.04 LTS fully patched. Anyone here with ideas on what it might be?

I have this message after returning from nightly version to the stable one: ``` Using an older version of Firefox can corrupt bookmarks and browsing history already saved to an existing Firefox profile. To protect your information, create a new profile for this installation of Firefox. ```

Hi Team, I am using Linux Mint 20 Cinnamon. Cinnamon version is 4.6.6. The issue is that I was browsing and by mistake I selected one tab then dragged it for sometime and then released the tab but that created a new window and now the old windows are not visible in ALT + Tab function. The windows are showing in the Firefox task manager and also the box icon in the top right corner in that "open tabs". Now I am not able to even change the window or able to access the opened tabs. Attached the screenshot and as you can see in that there are total 4 windows showing in firefox and one as active but in the bottom on the firefox icon you can see its only 1 window. How can I access the remaining 3 windows? Found one ticket (https://support.mozilla.org/en-US/questions/1477845) in this the recommend solution does not work. When I try to click on the window 1 tabs then I do not get any response. I tried both the solution but none worked.

Thanks for the help in advance. @Mozilla team member is seeing please check and fix this bug if possible.