Firefox Community Forum

Since Flathub list the org.mozilla.firefox app as official, i hope this is the correct support channel.

Recently i switched from distro specific package managers to flatpak as my application provider. The firefox flatpak won't play most embedded Video/Media on applications like in-browser fediverse clients, forums, blogs or wikis. Youtube works without any issues, Twitch is fine until there is an adbreak. Then it sometimes stops with the supported format/mime error (screenshot appended), only recoverable by cache-dismissive reload.

I used this Article https://support.mozilla.org/en-US/kb/audio-and-video-firefox and the links it contains to debug without any success. None of these samples play. just shows supported format/mime error https://test-videos.co.uk/bigbuckbunny/mp4-h265 At this test website 1. and 3. example won't play. I provided a screenshot before and after trying to click play on all the examples. https://www.tekeye.uk/html/html5-video-test-page

Contrary to the observed behavior about:support#media claims Software Decoding supported for everything except HEVC.

Chromium Flatpak has no such issues. So i copy the video url and play it with chromium. You can see: dire times.

Hello, I freshly installed my new computer and so my thunderbird version is now newer than before. I use Debian 12 with Thunderbird and Firefox 128.13.0esr now. I do unfortunately not know which version I had before, but I think my problems come from Thunderbird version, not from Debian.

I have 2 problems with the new dialog windows of Print, Save as, Open etc.

1. e.g. when I click on "Print", the dialog window opens and my problem is the position of the Button "Print". Now it is in the upper right corner and always before it was in the lower right corner. Can I change this position of the buttons?

2. e.g. when I click on "Save as", the dialog window opens and my problem is that the field of the filename in the upper middle is much too small in width. Before when this field was at the lower middle to right, there was much more width for the filename. Can I change the width of this field?

All in all my both problems are with dialog windows, which I think are Mozilla / Thunderbird / Firefox exclusive, because in other apps there are dialog windows which look completely different. Is there a way to change the entire "optic" of the dialog windows or maybe I can prevent Mozilla apps from using their own dialogs and use my system standard dialogs?

Best regards

I'm unable to login to account.apple.com on my laptop which is running Ubuntu 24.04.3 LTS.

I've launched Firefox using the `-p` option, created a new profile and then navigated to https://account.apple.com/sign-in and tried to login. I've attached a screenshot of the error message.

I had tried multiple things on my default profile, even troubleshoot mode, but I couldn't get it. I even tried useragent switcher to no avail.

I can login to the site using Chromium.

What else can I try?

Hello, American website and the German website German website fail to load the last 20%. This causes important top row graphics like logins and accounts not showing. Firefox private window loads the AliExpress website 100%.

I wiped History cache from Firefox, however same issue. Other websites load normally. I can't log in to AliExpress to report the issue there.

Specs: 141.0 (aarch64) Mozilla Firefox fo Raspberry Pi OS raspberrypios - 1.0

I have Marionette mode enabled to be able to remote control my Firefox, but I have trouble with some sites who believe I'm not human.

If I enable Marionette, then go to this site, I can't get past the Human verification.

https://www.perplexity.ai/shopping

Can sites detect that I'm using Marionette?

Hi, Facebook says my browser is not supported. And before say it was not up to date. Tried to download update but didn't know how to do the update. Not sure what to do? I am using Zorin OS 15.3. Don't know much about it

The "Browser Websocket Client" addon ( https://github.com/abeade/browser-websocket-client ) was automatically disabled. The addons manager says:

> This extension is restricted for violating Mozilla’s policies and has been disabled. You can enable it, but this may be risky.

However, I cannot find any information about which policies the addon violated or when. If it was logging or modifying data, I want to know to what extent I may be compromised from using the extension. If it was for lack of maintenance, I want to know so I can make an informed decision about whether to keep using it, because the addon was still useful to me and my work as of recently.

I recently reinstalled Debian 13 on my workstation. This included installing Firefox-esr from the Debian repositories so the version before and after the reinstall is the same. Despite this, Firefox refused to start until I created a new profile - insisting that my profile was from an older version.

To add insult to injury, it offers a method to import data from Chromium (which I use rarely) but not from a previous Firefox profile.

Firefox Sync works so far as it goes, but not everyone wants to use it. Importing from a local profile should be easier to implement than remotely syncing - especially given that Firefox clients may not be the same on different devices.

And, of course, the initial point is that Firefox should accept a user profile when it was created by the same version. After all, when I upgrade Firefox on Debian, I'm not required to create a new profile. Why should I be forced to do it when I reinstall the same version?

I use EndeavourOS and have U-Phoria UMC202HD audio interface connected to my PC. I know that the interface doesn't have mono/stereo switch and the only device connected to it is my microphone (connected to Input 1 socket). The problem is Firefox is receiving sound on left channel (Input 1 socket) and then it sends it without any modifications further, so f.e during meeting on Jitsi people hear me really quiet and only from one channel. Trying online mictests also ends with recorded sound being played only from left channel. I tried chromium based browsers and everything works fine there. Is there any solution for this?

This is a very minor issue. I don't know if this is a bug or unintended behavior, but it's my one gripe with tab groups.

Happens When:

• in a tab group, AND
• the current active tab is the rightmost tab of that group

Behavior: Then when opening a new tab, it puts the tab into the group to the right, or if the group is the rightmost group, it doesn't put it into a group at all.

This behavior is frustrating, because if the tab group to the right is closed, it makes navigating to—and from—the newly opened tab very frustrating, as the group it exists in can be collapsed.

I am now receiving this notice for more and more commonly accessed websites. I get the message if I have https only selected or not selected. Currently receiving for Lowes, Home Depot, American Airlines and more. I can go to a Firefox 135.0.1 browser on a separate desktop accessing the internet through the same router and do not have issues. I suspect I have been upgraded by Mozilla into a less functional browser version for whatever reason that Mozilla does this.

Sample Messages:

American Airlines Access Denied You don't have permission to access "http://www.aa.com/" on this server.

Reference #18.ea382f17.1754673395.2abc2b02

https://errors.edgesuite.net/18.ea382f17.1754673395.2abc2b02

Lowes Access Denied You don't have permission to access "http://www.lowes.com/search?" on this server.

Reference #18.89f8cd17.1754677280.265017bc

https://errors.edgesuite.net/18.89f8cd17.1754677280.265017bc

I didn't use my PC for 2 weeks, they worked fine before but now x/twitter notifications stopped working and I can't enable them. They still work on other websites like discord. console output: https://paste.debian.net/plainh/a634d235

I made a copy of the profile, in the copy I disabled extensions (Troubleshoot Mode), removed prefs.js and user.js, removed x.com site data, disabled Enhanced Tracking Protection, still can't enable notifications log: https://paste.debian.net/plain/1391196

making completely new profile does let me enable notifications in it but I'd like to figure out how to get them working back again in my original main profile log in fresh new profile: https://paste.debian.net/plainh/a73668f3