Firefox Community Forum

I upgraded my version of Firefox from an ESR version to v129.0.1 on Debian 12. Drag and drop of files from the desktop or the file manager (PCManFM-Qt) into the browser stopped working. It is still working properly in Chrome.

This occurs with several web apps but, as an example, it occurs when trying to drag a jpeg into Roundcube Webmail while composing a message.

No browser console errors are genrated when trying to do this. It occurs in Troubleshooting (safe) mode as well. In apps that pop-up a "Drag files here" target, that target still appears but dropping the file on it does nothing.

G'Day!

I've been having issues with media playback on firefox.

Almost any video source that isn't from youtube cannot play in firefox, giving the error: "No Video with supported format and MIME type found"

Testing the same video on Chromium has no problems.

Using Fedora Linux on an AMD system. And Fedora Flatpak build.

System specs below if required.

Any idea to get this up and running would be really appreciated. I think I already installed the propriety media codecs for fedora since the problem isn't showing up on chromium it looks like a firefox issue.

1. System Details Report

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1. 1. Hardware Information:

- **Hardware Model:** Gigabyte Technology Co., Ltd. B550M DS3H - **Memory:** 16.0 GiB - **Processor:** AMD Ryzen™ 5 5600G with Radeon™ Graphics × 12 - **Graphics:** AMD Radeon™ Graphics - **Disk Capacity:** 512.1 GB

1. 1. Software Information:

- **Firmware Version:** F2c - **OS Name:** Fedora Linux 40 (Workstation Edition) - **OS Build:** (null) - **OS Type:** 64-bit - **GNOME Version:** 46 - **Windowing System:** Wayland - **Kernel Version:** Linux 6.10.3-200.fc40.x86_64

One of the typical configuration in linux is to turn off the user namespaces and/or network namespaces. This is because most of the exploits in linux have been related to namespaces vulnerabilities.

If there is a Firefox ver 127.0.2, running on Linux in which the user namespace is turned off then the following is observed in the Troubleshooting information, i.e. about:support Seccomp-BPF (System Call Filtering) true Seccomp Thread Synchronisation true User Namespaces for privileged processes true User Namespaces false Content Process Sandboxing true Media Plugin Sandboxing true

So how come with the username turned off, the content process and media plugin is still sandboxed? Also is having user namespace turned off, as given above, a security risk?

However if the network namespace is turned off, i.e. max_net_namespaces is set to zero, then it renders the browser unusable. Nothing works. Why is that?

Is there some documentation somewhere where these namespaces and their impact is explained in detail?

Up until the latest Firefox Nightly release, I could click on the '+' to open a new tab and immediately start typing the URL. Now, however, I am required to select a container type, something that is useless to me. Is there a way to disable this?

UPDATE: Never mind, I found the setting for Enable Container Tabs, which needs to be deselected. Why is this an opt-out?

If a moderator wants to delete this post, go for it.

When I try to print and use the "print to pdf" printer, the save button does nothing. I can print to my printer, but I cannot create pdf's. I am using Firefox 129.0 and Ubuntu 22.04.4 LTS

Hi everyone,

I use Firefox as my primary browser for several reasons, but the main one is because it has the best Picture-in-Picture (PiP) feature. However, I no longer use Windows and have encountered problems with it on various Linux distributions (Ubuntu, Fedora, Debian...). Currently, I'm only using Fedora 40, and the problem persists.

The issue is that when I click on the PiP icon, it activates normally, but when I switch windows or minimize and then maximize Firefox again, the video disappears.

I will attach some screenshots to clarify the issue.

I would like to know if there is any way to resolve this. I’ve already reset the settings, cleared the cache, and tested different installation methods (software store, .tar.bz file, apt, dnf, snap). I’ve tried troubleshooting mode and even installed the Developer Edition, but the problem persists. I’m wondering if this is an issue with the Linux version of Firefox.

Thank you.

I frequently have the problem of accidentally detaching tabs when I am trying to drag them left and right to reorder them. The interface seems more sensitive than I would like. The unwanted detaching of tabs happens to me many times a day and is jarring and causes me to lose a lot of time trying to put the tabs back. I would like the interface to be less sensitive, i.e. to make me drag it much farther up or down in order to detach the tab. If the feature to fine-tune the sensitivity of the tab-break-off is not implemented, I want the ability to turn it off, so that I can reorder tabs by dragging them left and right without having to worry about them detaching.

I searched and found an 8-year-old request from another user for the same thing, and it had been closed, and linking the user to third-party extensions adding this functionality. However, the extensions were not monitored by Mozilla for security.

This was a non-solution to me. I want this solution either to be built-into the browser, or to be offered in an extension that is monitored for security by the official team.

Hi, so I've "Show an image preview when you hover on a tab" setting under Tabs section "Off". Preview is not showing but instead there is am empty box like on attached image. I couldn't find any other option to turn that off also.

I'm using latest firefox nightly release.

I am trying to submit a new Add-on, Firefox requires to add 2 factor authentication, and when I am trying to do that and enter code it tells me that is wrong even I am sure it is right. I tried many times with many auth app on my phone Hope to solve that to submit my Add-on

This is pretty much the same as https://support.mozilla.org/en-US/questions/801343 back in Firefox 3.x → 4 times. I do recall having the same problem then, and disabling hardware acceleration did fix it back then, but it no longer does.

I’m currently on 115.3 ESR, but I’ve observed this for a while in Quantum (I don’t recall seeing it on Gecko with HW accel disabled).

Hi Firefoxers, I've recently returned to using Firefox after using Chrome, Vivaldi, and Brave for a long time. Most Firefox things are better than these, but I find the bookmarks handling in Firefox extremely frustrating in comparison.

When clicking the bookmark star, the edit bookmark box pops up. The location dropdown gives me a list of 7 recent folders where I can store the bookmark. If I click "Choose" a tiny little box opens up and, in this extremely cramped space, I have to scroll through hundreds of folders and all their expanded subfolders to find the one I want.

One way other browsers solve this problem is by letting the user right click directly on their bookmarks folders and select "Add bookmark here", which then automatically saves URL, page title etc to that folder. But in Firefox, this just opens up a blank "Add Bookmark" box that doesn't contain any info about the current page, meaning you have to manually enter all the details.

So I'm interested in any help advice about:

a) Increasing the number of recent folders in the location drop-down to make it a lot more than 7.

b) Increasing the size of the "Choose" box so I can see the list of hundreds of folders more comfortable.

c) Stopping all folders being automatically expanded in the "Choose" box.

d) Making Firefox auto-add the details from a current page when clicking "Add Bookmark".

Any help would be appreciated!

Hello

Out of nowhere I started having problems watching Videos on Twitch. So, after some Flatpak repairs and reinstalls, I decided to sync my data with Firefox Sync and remove it completely. For my surprise after reinstalling and logging in on Firefox Sync my only extensions and, what looks like part of my history were restored. Lost my session, custom tabs names etc.

How do I get access to a page that is unsafe if I want it. As I do service a lot of old machines and it is anoying that I have to use all the time a different browser because of not getting thrue to the page if it is for example only http:// and has not Cert.

This anoying feature is very bad as it is destroying the usage reason of firefox.

Trying to get to the "http://localhost:631" website from my Ubuntu 22.04, but always get "can not connect". What is going on? What do I need to do to fix this? I have tried to add this website to the exception list but it changes the http to https.

Why do you make it so fxxxxxx hard to ask a question??????? In the tab info it says, If you want to move a tab from one Firefox window to another, click on the tab and drag it to the tab strip of another Firefox window.

What the xxxx does that mean????? There is no tab strip!! There is no obvious place to move it! These are bad instructions! When you write instructions read them over and make sure they are complete! Have somebody that doesn't know anything read them and see if they can follow them!

When I upload my profile picture to Mozilla accounts, it renders correctly in the browser, but when I click submit, it changes to lots of lines that give me trypophobia. It is also wrong in the Firefox browser profile icon.