Firefox Community Forum

So, I recently updated my copy of Mozilla Firefox, and I noticed something strange. The button for the built-in VPN is disproportionately large to other buttons and clickable elements. I don't see it in the release notes, so I doubt this is an intentional design choice by the UX team, at least I hope it isn't. Any help will be greatly appreciated, as it is really distracting.

If it helps, I'm using Mozilla Firefox 151.0.2 running under GNU/Linux Debian 13 Trixie as a Flatpak.

I checked and borh of my Lenovo Chromebooks are running the 2026 version. Neither one will allow me to import bookkmarks . Is there a version I need other than the provided by Google?

After all of those years, am I witnessing now that FF literally failing?

How could it become mysterious by that it lets user's location leaked to github even though: - third-party HiFi company VPN is active and in OpenVPN UDP/TCP, Wireguard, IPv6 On/Off, etc... - No bookmark to corresponding website - Cache and website data were so-called cleaned, - Other browsers don't give that symptom, only FF - No related plugin, out of only 3

it's impossible to find out how it lends to the language and region query of this website every time after cleaning. Is FF getting closed app?

Is that a no-way-to-explain effect of language models' evolution is exponentially higher in every 4 months after two years?

Previous to version 151.0.1, when I pressed ctrl-L, Firefox focused the URL bar and I was able to edit the URL. Now, on 151.0.1, pressing ctrl-L clears the URL and a dropdown for the search engine appears in the left of the URL bar (see attached screenshot). I have verified this on a new, blank profile. Is there a way to restore the old behavior?

There are certain websites that, on firefox only, display apostrophes and quotations as Russian letters. For example, on google docs, if I type "He's such a great friend" it will display уHeТs such a great friendФ. When I open the document on the app, it is normal, but I haven't been able to figure out why it does this on my computer. I use Mozilla Firefox for Fedora 149.0.2 for reference.

I used to paste a text selection (temporary clipboard) into the URL bar and it would replace the loaded text/url. Now, it inserts it to the existing content at the point of the cursor. Why does it do it now? Is this an option i have to disable or is it a bug?

This is on v151 now

Why isn't there a simple means to remove/prevent searches for the address bar, using config doesn't work.

I've used Firefox for over twenty years, this annoyance will end that and force a move to Brave.

Apologies for the long post but this is important and a bit complicated.

There are a couple issues here. I assume that this applies to uploads as well but I haven't really investigated that. To be fair, probably all browsers suffer from similar problems, but the fix has to start somewhere, and Firefox seems ideal due to its prioritization of UX over advertising etc.

First of all, the serious one: empirically, Firefox just times out and gives up on downloads after a certain period of idleness from the peer, as though I somehow no longer want the file simply because the server is busy. This makes mass downloads impossible in some cases. The browser should never stop retrying until I manually cancel. But I get it: you don't want to hammer the server with endless requests that it can't handle. So what to do?

Exponential backoff is a bad idea because the probability distribution function of server downtime is more accurately modeled as a decaying power law, not a decaying exponential. Therefore quadratic backoff between retries might make more sense: 1, 4, 9, 16, 25, etc. time units between retries. But this is also a bad idea because then retries arrive more or less simultaneously across all N active downloads, which might originate from the same server. So random quadratic backoff would be preferable: a per-file random time delay between 1 and 4 time units, 4 and 9, 9 and 16, etc.

A more sophisticated approach would be to calibrate the decay exponent through training, but the benefit in terms of efficiency would be incremental. I'll leave that to you.

The bottom line is that it's never appropriate for the browser to supplant its own judgment for the user's command. It should never give up on a download even if the network disappears for a while, except maybe in catastrophic circumstances, wherein for example the server says that the file is no longer available.

Users sometimes need to launch a large set of downloads and leave them over the weekend to complete. This should be trivial and routine but it's currently a babysitting job.

Secondly, the UI issue: remaining download times are poorly modeled, even from an algorithmic perspective without any consideration for AI training over time. In the most typical case, a user is downloading from a datacenter with vastly more bandwidth to spare than the user's own connection, notwithstanding that the file is probably coming from a single server with much less bandwidth than the datacenter as a whole. This means that the peer is faster than the user in most cases. Therefore, typically, the download proceeds subject to the user's own bandwidth constraint. Consequently, the user's total bandwidth is divided among all N active downloads.

But the estimated time remaining only incorporates the current average rate of each download. It doesn't model the fact that, once a download finishes, the freed bandwidth will soon be redistributed among the remaining (N-1) downloads, and then (N-2), etc. This can make an enormous difference in the estimated time remaining, to the point that the existing estimates are uninformative. It's not too complicated to model this algorithmically and display much more accurate estimates.

There's also the current download rate as displayed, e.g. 3 MB/s, which is also uninformative because it's often subject to spikes. You're better off displaying the average download rate over the entire history for the file in question, than the rate over the last however-many seconds. In other words, look at the average download rate over the entire download process up to now, not some arbitrarily windowed subset thereof.

A much more informative number is the number of seconds for which the server has been unresponsive. There's no need to display it unless the server has been idle for at least a second. But after that happens, give a warning indicating that you haven't heard from the server for the past however-many seconds. If all N downloads are in this warning mode, then you might post another warning indicating that the network seems to be disconnected from the internet even though the local router might still be reachable. I'm sure you can improve upon this but idle period is useful information.

Please note that there are 2 major complicating factors which should be taken into a account when estimating remaining download time: (1) the N-way stepwise redistributed bandwidth model described above and (2) the empirical fact that, if we look at aggregate download behavior on large scales, it tends to decay (albeit softly) according to a power law throughout the course of the download, as a result of increasing connection management entropy (packet retries wasting time, intervening "smart" routers adding latency instead of helping anything, operating systems distracted with other tasks, cache misses, etc.). (Over very long periods of time, file transfers speed up exponentially due to Moore's Law applied to bandwidth, but this isn't the timescale of most downloads.) I'm sure you can think of yet more sophisticated ways of modeling expected download time, even including the media flushing and garbage collection latency that's the cause of the ubiquitous pause-at-99-percent phenomenon. The point is simply that there's a lot of low-hanging fruit to be harvested with respect to more accurate time estimates.

Everyone does downloads. This issue is worth your time and attention. Thank you for reading this.

At some point I decided to use default tab wallpapers by Mozilla. With an update of home menu 151.0 , there is a new logo in the center "Firefox". You can see it on (screenshot 1). It covers any background picture, in my case a tail of the fox. I can't figure out how to hide this logo. I have one icon on my taskbar already; having it in the layout is just a redundancy. Obviously i know that i use Firefox there is no need to remind me that

A little extra note: The layout reflow of the logo works bad when the window is resized. It's not centralized.(screenshot 2).

The only band-aid that i see is in Settings >> New tabs >> Blank Page. It turns of wallpapers and whole layout of homepage which is not my target (screenshot 3).

I use Ubuntu 24.04.4 LTS , snap Firefox 151.0.1

A while ago I made some changes in about:config and also in my ~/.config/gtk-3.0/gtk,css file so as to control my scrollbar and slider -- making them more visible:

/* Log out, and back in for these changed to take effect: */

scrollbar { background-color: #cccccc; } scrollbar slider { min-width: 20px; }

/* dark green: pointer is not in the active window */ scrollbar slider:backdrop { background-color: #00aa00; }

/* green: pointer is in the active window but not on a slider */ scrollbar slider { background-color: #00ff00; }

/* dark red: pointer is hovering over slider but mouse button not pressed */ scrollbar slider:hover { background-color: #aa0000; }

/* red: slider is active */ scrollbar slider:hover:active { background-color: #ff0000; }

/* No effect: */ /* scrollbar-color: blue white; */

... it works half the time. Some pages obey the above settings but other pages continued to show a scrollbar about a mm wide with the slider so faint as to barely be visible. So, in 'about:config' :

widget.non-native-theme.scrollbar.size.override 30

... at least made the narrow scrollbar a bit wider. But how to change it's color? Doing this in a file:

~/.mozilla/firefox/5dqk4533.default/chrome/userContent.css:

html,body{

   scrollbar-color: yellow blue !important;
  }
.... doesn't change anything.  Is there some complete guide to controlling the srollbars?  Nice if it could all be handled in one place of course.

I ran the commands listed in the instructions for installing Mozilla VPN with Linux and I got the following error after running the following command:

pub/{getline; gsub(/^ +| +$/,""); if($0 == "35BAA0B33E9EB396F59CA838C0BA5CE6DC6315A3") print "\nThe key fingerprint matches ("$0").\n"; else print "\nVerification failed: the fingerprint ("$0") does not match the expected one.\n"}'

I need to know what I need to do in order to continue on with the istallation

I submitted a bug last to Bugzilla last Sep. that seems not yet to be assigned to anyone, and a bug two days ago that wasn't acknowledged. Is the Bugzilla site working? Should I be doing something else to report the bug?

I use Linux Mint and I have been experiencing numerous system crashes involving Firefox which requires a cold boot. What is the problem? How can I debug this? Are you getting crash reports?’

This happens several times a week. It has happened continuously tonight since installing the latest update via the Software Manager.

The program causes a total freeze of the OS. All other running programs and all input sources. I have no choice but to shut down via the power button on the tower.

Mint generates crash reports but I have no way to determine if they are being sent to Mozilla.

Firefox for Linux does not provide a troubleshooting system like it does on Windows. Neither does Mint.

I studied Computer Science in the 80s when Firefox was known as Navigator. I learned C and the Unix OS, but since then I became a psychologist, and don't remember too much of the Com Sci stuff I learned and I don't think Mint allows user modifications anyway.

What can be done to fix this? I don't have the Benjamins to buy a new Windows to replace the Linux, nor do I want to.

Hi,

two days ago, video embeds on Twitter stopped working in Firefox. Please help me troubleshoot the issue, so that I can either fix it myself, or present enough evidence to file a proper bug report.

Affected version: FF 140 ESR. I had some 140.7 installed when the error first happened, but have upgraded to firefox-esr_140.10.1esr-1_amd64 since. Didn't fix the problem. *Not* a snap package, regular .deb!

Affected OS: Ubuntu 26.04 LTS, not a fresh install but upgraded from 24.04 instead (which itself was upgraded from 22.04).

Symptoms: Videos on X (and Facebook) no longer play, the preview image is there for a split second, then an error appears. Video on for example Youtube is fine, though. Local players like VLC also do work as expected. Video on X worked under 26.04 before this happened.

The issue likely started when removing surplus packages and metapackages from the upgrade. According to synaptics, this is the complete list of packages removed: augeas-lenses bomber bovo clevis clevis-luks db-util db5.3-util dolphin-dev gir1.2-freedesktop-dev gir1.2-glib-2.0-dev girepository-tools gostsum granatier guestfish guestfs-tools guestmount icu-devtools jose kapman katomic kblackbox kblocks kbounce kbreakout kdegames kdegames-mahjongg-data-kf6 kdiamond kfourinline kgeography kgeography-data kgoldrunner kigo killbots kiriki kjumpingcube klickety klines kmahjongg knavalbattle knetwalk knights kolf kollision konquest kreversi kshisen ksirk ksnakeduel kspaceduel ksquares ktuberling ktuberling-data kubrick kubuntu-web-shortcuts ldmtool libaom-dev libarchive-tools libaugeas0 libblkid-dev libconfig11 libdbus-1-dev libdlt3 libffi-dev libfmt-dev libfontconfig1-dev libfribidi-dev libgd-perl libgio-2.0-dev libgio-2.0-dev-bin libglib2.0-dev libglib2.0-dev-bin libgraphite2-dev libguestfs-perl libguestfs-tools libguestfs0t64 libharfbuzz-cairo0 libharfbuzz-dev libhivex0 libicu-dev libjose0 libjson-glib-dev libjxr-tools libjxr0t64 libkdegames6private6 libkmahjongg6 libldm-1.0-0t64 libmosquitto1 libmount-dev libosinfo-1.0-0 libosinfo-l10n libpcre2-dev libpixman-1-dev libpolkit-gobject-1-dev libpsl-dev libpwquality-tools libpython3-dev libpython3.14-dev libselinux-dev libsepol-dev libspdlog-dev libsqlite3-dev libssh-dev libstd-rust-dev libstring-shellquote-perl libsys-virt-perl libsysprof-capture-4-dev libsystemd-dev libtirpc-dev libusb-0.1-4 libusb-1.0-0-dev libusb-1.0-doc libusb-dev libvirt-common libvirt0 libwebsockets19t64 libwhoopsie-preferences0 libwhoopsie0 libwin-hivex-perl libx265-dev libxdo-dev libxdo3 libxft-dev libxkbcommon-dev libxrender-dev libyara10 lskat lskat-data mosquitto mosquitto-clients native-architecture osinfo-db palapeli palapeli-data picmi qml6-module-org-kde-games-core skladnik supermin whoopsie whoopsie-preferences I don't think they are related (libx265 and libaom are only the -dev packages), but this is the only system-wide change on that day that I can remember. I of course tried re-installing these, but this also doesn't fix the problem.

On my journey of fixing this myself, I also asked the all-hallucinating knowledge randomizer frontend of OpenAI, which made me check a couple generic spots on my system and in FF itself.

ffmpeg -codecs | grep -E "h264|hevc|vp9|av1" ffmpeg version 8.0.1-3ubuntu2 Copyright (c) 2000-2025 the FFmpeg developers

 built with gcc 15 (Ubuntu 15.2.0-13ubuntu3)
 configuration: --prefix=/usr --extra-version=3ubuntu2 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --disable-pocketsphinx --disable-libcaca --disable-libmfx --disable-omx --enable-gnutls --enable-libaom --enable-libass --enable-libbs2b --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libglslang --enable-libgme --enable-libgsm --enable-libharfbuzz --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-openal --enable-opencl --enable-opengl --disable-sndio --enable-libvpl --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-ladspa --enable-libbluray --enable-libdvdnav --enable-libdvdread --enable-libjack --enable-libjxl --enable-libpulse --enable-librabbitmq --enable-librist --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libx264 --enable-libzmq --enable-libzvbi --enable-lv2 --enable-sdl2 --enable-libplacebo --enable-librav1e --enable-librsvg --enable-shared
 WARNING: library configuration mismatch
 avcodec     configuration: --prefix=/usr --extra-version=3ubuntu2 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --disable-pocketsphinx --disable-libcaca --disable-libmfx --disable-omx --enable-gnutls --enable-libaom --enable-libass --enable-libbs2b --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libglslang --enable-libgme --enable-libgsm --enable-libharfbuzz --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-openal --enable-opencl --enable-opengl --disable-sndio --enable-libvpl --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-ladspa --enable-libbluray --enable-libdvdnav --enable-libdvdread --enable-libjack --enable-libjxl --enable-libpulse --enable-librabbitmq --enable-librist --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libx264 --enable-libzmq --enable-libzvbi --enable-lv2 --enable-sdl2 --enable-libplacebo --enable-librav1e --enable-librsvg --enable-shared --enable-version3 --disable-doc --disable-programs --disable-static --enable-libaribb24 --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libtesseract --enable-libvo_amrwbenc --enable-libsmbclient
 libavutil      60.  8.100 / 60.  8.100
 libavcodec     62. 11.100 / 62. 11.100
 libavformat    62.  3.100 / 62.  3.100
 libavdevice    62.  1.100 / 62.  1.100
 libavfilter    11.  4.100 / 11.  4.100
 libswscale      9.  1.100 /  9.  1.100
 libswresample   6.  1.100 /  6.  1.100
DEV.L. av1                  Alliance for Open Media AV1 (decoders: libdav1d libaom-av1 av1 av1_cuvid av1_qsv) (encoders: libaom-av1 librav1e libsvtav1 av1_nvenc av1_qsv av1_vaapi av1_vulkan)
DEV.LS h264                 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (decoders: h264 h264_v4l2m2m h264_qsv h264_cuvid) (encoders: libx264 libx264rgb h264_nvenc h264_qsv h264_v4l2m2m h264_vaapi h264_vulkan)
DEV.L. hevc                 H.265 / HEVC (High Efficiency Video Coding) (decoders: hevc hevc_qsv hevc_v4l2m2m hevc_cuvid) (encoders: libx265 hevc_nvenc hevc_qsv hevc_v4l2m2m hevc_vaapi hevc_vulkan)
DEV.L. vp9                  Google VP9 (decoders: vp9 vp9_v4l2m2m libvpx-vp9 vp9_cuvid vp9_qsv) (encoders: libvpx-vp9 vp9_vaapi vp9_qsv)
DEAIL. wmav1                Windows Media Audio 1

-> ffmpeg is installed, version 8, av1 and hevc support seems present. The sparse advice from google results (similar thing in a Gentoo forum I think) on installating ffmpeg4.4 is no longer viable. --- apt list --installed | grep libavcodec

libavcodec-dev/resolute,now 7:8.0.1-3ubuntu2 amd64 [installed] libavcodec-extra62/resolute,now 7:8.0.1-3ubuntu2 amd64 [installed,automatic] libavcodec-extra/resolute,now 7:8.0.1-3ubuntu2 amd64 [installed]

(libavcodec62 non-extra was installed before, didn't change anything) --- apt list --installed | grep libaom*

libao-common/resolute,resolute,now 1.2.2+20180113-1.2ubuntu2 all [installed,automatic] libao4/resolute,now 1.2.2+20180113-1.2ubuntu2 amd64 [installed,automatic] libaom3/resolute,now 3.13.1-2 amd64 [installed,automatic] --- FF about:support in the codec section says this: Codec Support Information Codec Name Software Decoding Hardware Decoding H264 Unsupported Supported VP9 Supported Supported VP8 Supported Supported AV1 Supported Unsupported HEVC Unsupported Supported AAC Unsupported Unsupported MP3 Supported Unsupported Opus Supported Unsupported Vorbis Supported Unsupported FLAC Supported Unsupported Wave Supported Unsupported --- vainfo Trying display: wayland libva info: VA-API version 1.23.0 libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so libva info: Found init function __vaDriverInit_1_22 libva info: va_openDriver() returns 0 vainfo: VA-API version: 1.23 (libva 2.22.0) vainfo: Driver version: Intel iHD driver for Intel(R) Gen Graphics - 26.1.2 () vainfo: Supported profile and entrypoints

     VAProfileMPEG2Simple            : VAEntrypointVLD
     VAProfileMPEG2Main              : VAEntrypointVLD
     VAProfileH264Main               : VAEntrypointVLD
     VAProfileH264Main               : VAEntrypointEncSliceLP
     VAProfileH264High               : VAEntrypointVLD
     VAProfileH264High               : VAEntrypointEncSliceLP
     VAProfileJPEGBaseline           : VAEntrypointVLD
     VAProfileJPEGBaseline           : VAEntrypointEncPicture
     VAProfileH264ConstrainedBaseline: VAEntrypointVLD
     VAProfileH264ConstrainedBaseline: VAEntrypointEncSliceLP
     VAProfileVP8Version0_3          : VAEntrypointVLD
     VAProfileHEVCMain               : VAEntrypointVLD
     VAProfileHEVCMain10             : VAEntrypointVLD
     VAProfileVP9Profile0            : VAEntrypointVLD
     VAProfileVP9Profile2            : VAEntrypointVLD

--- running with MOZ_DISABLE_HW_DECODE=1 firefox -> no change --- A fresh profile shows the same issues, so this should not be config-related in terms of Firefox --- Safe mode on my standard profile also doesn't change anything --- running with MOZ_LOG="PlatformDecoderModule:5" firefox -> also no change, but now on every try to play a video, these three lines are spammed: [Child 2326924: Main Thread]: D/PlatformDecoderModule Sandbox Utility Generic decoder rejects requested type video/avc [Child 2326924: Main Thread]: D/PlatformDecoderModule Sandbox Utility Generic decoder rejects requested type video/av1 [Child 2326924: Main Thread]: D/PlatformDecoderModule Sandbox Utility Generic decoder rejects requested type video/hevc

On other websites, the occasional [Child 2330726: Main Thread]: D/PlatformDecoderModule Sandbox Utility Generic decoder rejects requested type audio/mp4a-latm or [Child 2331802: Main Thread]: D/PlatformDecoderModule Sandbox Utility Generic decoder rejects requested type video/vp8

is added.

Some time close to starting FF, this block is presented: [Utility 2331783: Main Thread]: D/PlatformDecoderModule PDMInitializer, Init PDMs in Utility process [Utility 2331783: Main Thread]: D/PlatformDecoderModule FFMPEG: version: 0x200, macro: 62, micro: 101, isFFMpeg: yes [Utility 2331783: Main Thread]: D/PlatformDecoderModule FFVPX: Link result: Success [Utility 2331783: Main Thread]: D/PlatformDecoderModule FFmpeg decoder rejects requested type 'video/avc' [Utility 2331783: Main Thread]: D/PlatformDecoderModule Agnostic decoder rejects requested type 'video/avc' [Utility 2331783: Main Thread]: D/PlatformDecoderModule FFmpeg decoder supports requested type 'video/vp9' [Utility 2331783: Main Thread]: D/PlatformDecoderModule FFmpeg decoder supports requested type 'video/vp9' [Utility 2331783: Main Thread]: D/PlatformDecoderModule FFmpeg decoder supports requested type 'video/vp8' [Utility 2331783: Main Thread]: D/PlatformDecoderModule FFmpeg decoder supports requested type 'video/vp8' [Utility 2331783: Main Thread]: D/PlatformDecoderModule FFmpeg decoder supports requested type 'video/av1' [Utility 2331783: Main Thread]: D/PlatformDecoderModule FFmpeg decoder supports requested type 'video/av1' [Utility 2331783: Main Thread]: D/PlatformDecoderModule FFmpeg decoder rejects requested type 'video/hevc' [Utility 2331783: Main Thread]: D/PlatformDecoderModule Agnostic decoder rejects requested type 'video/hevc' [Utility 2331783: Main Thread]: D/PlatformDecoderModule FFmpeg decoder rejects requested type 'audio/mp4a-latm' [Utility 2331783: Main Thread]: D/PlatformDecoderModule Agnostic decoder rejects requested type 'audio/mp4a-latm' [Utility 2331783: Main Thread]: D/PlatformDecoderModule FFmpeg decoder supports requested type 'audio/mpeg' [Utility 2331783: Main Thread]: D/PlatformDecoderModule FFmpeg decoder supports requested type 'audio/mpeg' [Utility 2331783: Main Thread]: D/PlatformDecoderModule FFmpeg decoder supports requested type 'audio/opus' [Utility 2331783: Main Thread]: D/PlatformDecoderModule FFmpeg decoder supports requested type 'audio/opus' [Utility 2331783: Main Thread]: D/PlatformDecoderModule FFmpeg decoder supports requested type 'audio/vorbis' [Utility 2331783: Main Thread]: D/PlatformDecoderModule FFmpeg decoder supports requested type 'audio/vorbis' [Utility 2331783: Main Thread]: D/PlatformDecoderModule FFmpeg decoder supports requested type 'audio/flac' [Utility 2331783: Main Thread]: D/PlatformDecoderModule FFmpeg decoder supports requested type 'audio/flac' [Utility 2331783: Main Thread]: D/PlatformDecoderModule FFmpeg decoder supports requested type 'audio/x-wav' [Utility 2331783: Main Thread]: D/PlatformDecoderModule FFmpeg decoder supports requested type 'audio/x-wav' [Parent 2331581: Main Thread]: D/PlatformDecoderModule Broadcast support from 'Utility Generic', support=H264 NONE VP9 SW VP8 SW AV1 SW HEVC NONE AAC NONE MP3 SW Opus SW Vorbis SW FLAC SW Wave SW

Back in FF 140.7, I also got these lines, but they're no longer present in 140.10 or flags have changed, I don't know: [Child 2238921, MediaDecoderStateMachine #1] WARNING: Decoder=7329b02ba900 state=DECODING_METADATA Decode metadata failed, shutting down decoder: file ./dom/media/MediaDecoderStateMachine.cpp:371 [Child 2238921, MediaDecoderStateMachine #1] WARNING: Decoder=7329b02ba900 Decode error: NS_ERROR_DOM_MEDIA_METADATA_ERR (0x806e0006): file ./dom/media/MediaDecoderStateMachineBase.cpp:168

--- The troubleshooting info below this text box says this somewhere:

"name": "AV1_HW_DECODE",
         "description": "AV1 hardware decoding",
         "status": "blocklisted",
         "log": [
           {
             "type": "default",
             "status": "available"
           },
           {
             "type": "env",
             "status": "blocklisted",
             "failureId": "FEATURE_FAILURE_VIDEO_DECODING_MISSING",
             "message": "#BLOCKLIST_FEATURE_FAILURE_VIDEO_DECODING_MISSING"
           }

Open to suggestions on where to dig deeper next...thank you!

Hello! I really liked the vertical tab panel management before, if I wanted it to disappear I've pressed ctrl + alt + z and if I wanted it to show only icons of the websites - I could press ctrl + alt + x twice and had the mini version of it. For some reason, now it's gone, when I press ctrl + alt + x twice the panel is gone completely. Could you help out here? Essentially, I want to be able to make it look like that (screenshot attached), only without the AI Assistant.

I have used the new and old profile system, and I use Firefox Nightly. On one of my profiles I am unable to delete profiles created with the new profile system.

When I use Manage profiles and click the delete icon I get about:deleteprofile but clicking the Delete button nothing happens. The display doesn't change, no message appears in the browser console, and the profile doesn't get deleted.

This is running Firefox Nightly 153.0a1. When I use Firefox 151 on the same system (different profile) the delete works fine. When I use the same version of Firefox Nightly on a different system about:deleteprofile works fine.

Both computers are running Ubuntu 24.04.4 LTS. The new profiles don't show up in about:profiles. I now have several profiles I can't delete following the instructions from https://support.mozilla.org/en-US/kb/profile-management#w_delete-a-profile . Most of them I created, closed the window, and immediately tried to delete.

Following the instructions from https://support.mozilla.org/en-US/questions/1572980 and https://bugzilla.mozilla.org/show_bug.cgi?id=2000125#c4 I looked at the toolkit.profiles.storeID preference. The preference is the same in the child profiles as in the original profile.

I tried starting the original profile in Troubleshoot Mode. That had no effect on the behavior.

I am using firefox on linux since ~10 years. Currently running latest FF on Kubuntu. I always had setting set to forget all cookies and session details except of search history on exit.

Since approx 2-3 weeks (latest update?) those settings don't work. FF remembers everything regardless of settings I chose.

Does anyone have idea why this is happening now and how to fix it?