Mozilla Firefox

[Grogan]

I started noticing tons of these messages on my root console

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Failed to create /home for shader cache (Permission denied)---disabling.

Note that this is not mesa's shader cache it's trying to create, it's Firefox's webgl shader cache.

With Firefox 129 I saw them sometimes, but it referenced .cache that it couldn't create. It's lazy programmatic directory creation, it's typical to create the full path (writing through if present).

I didn't know where it was coming from at first, but it's firefox causing it. Strange, I don't have webgl shader cache enabled (it's force disabled according to env)

It was not happening on Gentoo, and it's the same profile (copied from here originally). I thought maybe it was because I was forcing some graphics settings (webrender, hw compositing) so, seeing as it's no longer necessary to do that to use webrender, I reverted them. That wasn't it (and the browser in Gentoo has those same forced settings... still)

I also deleted ~/.cache/mozilla and renamed my ~/.mozilla profile directory to start with a fresh one. The shader cache messages did not occur.

The messages don't start until Firefox does something, like loading up a youtube video for a hover preview...

It turned out to be:

media.ffmpeg.vaapi.enabled true

How I figured that out was by comparing pasted output from about:support between my gentoo and arch, and noting a subtle difference in hardware video decoding support in the output. On arch it was showing as force enabled, though the setting is disabled by env. On gentoo it was showing it force enabled, but disabled by gfxinfo (actually fails because of ffmpeg)

That's bugged, it shouldn't be trying to cache shaders and shouldn't be trying to write through /home in any case.

Why only here do I get those floods of errors, and not on Gentoo with the same setting enabled? Because a test fails there, and it gets disabled (Firefox's gfxinfo function) so it doesn't go there. It actually works here (probably something on gentoo wasn't compiled with libva)

P.S. Yes, that was it. My ffmpeg on Gentoo doesn't have a lot of functionality enabled... including "-vaapi" in the USE flags it was built with. So that's why I wasn't getting the errors, it was just not initializing. I'm going to fix that.

So now that I have it figured out, I'm going to enable vaapi again and just ignore the console messages for now. (If they don't fix that, I'll find the error in the source and get firefox to stop printing it)

[Grogan]

I still don't have hardware video decoding working on Gentoo. I rebuilt my ffmpeg with the vaapi USE flag. There must be something else missing support for it that I'm not aware of. It can't be firefox (same build, common location). My mesa is built with gallium va support too.

Not that it matters, I couldn't tell the difference in youtube video playback on this system. Maybe on the old one it might have mattered. All the same, I want that working. It is in Arch, despite the spurious shader cache errors (this shouldn't be caching shaders in the first place).

See the difference in about:support output. Those accelerated codecs don't even show up in the gentoo output because the video test fails.

This is Arch, where it's working

firefox_hwvideo_arch.jpg (148.43 KiB) Viewed 125507 times

This is in Gentoo, where it's not working. Note the first difference, where it says "runtime" disabled, and then shows a test failure. It then doesn't enable any of the supported hwaccel codecs.

firefox_hwvideo_gentoo.jpg (85.06 KiB) Viewed 125507 times

[Grogan]

I think I fingered it out... I've been Gentoo'd.

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grogan@nicetry ~ $ vainfo
Trying display: wayland
Trying display: x11
libva info: VA-API version 1.22.0
libva info: Trying to open /usr/lib64/va/drivers/radeonsi_drv_video.so
libva info: va_openDriver() returns -1
vaInitialize failed with error code -1 (unknown libva error),exit

(of course, I didn't have vainfo, I had to get libva-utils)

They've got the mesa driver for it in a different location, and I have my mesa linked off elsewhere and mine is in the standard location in my mesa prefix. Of course that doesn't jibe, libva is loading the wrong driver and it would be loading the wrong gallium libraries and shit. That explains why it's failing the actual video test. The solution is obviously, you guessed it, yet another environment variable to override Gentoo

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LIBVA_DRIVERS_PATH=/opt/mesa/lib64/dri

P.S. Alright... I exported that in /etc/profile.d and logged off/on and now:

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grogan@nicetry ~ $ vainfo
Trying display: wayland
Trying display: x11
libva info: VA-API version 1.22.0
libva info: Trying to open /opt/mesa/lib64/dri/radeonsi_drv_video.so
libva info: Found init function __vaDriverInit_1_22
libva info: va_openDriver() returns 0
vainfo: VA-API version: 1.22 (libva 2.22.0)
vainfo: Driver version: Mesa Gallium driver 24.3.0-devel for AMD Radeon RX 7700 XT (radeonsi, navi32, ACO, DRM 3.57, 6.10.8)
vainfo: Supported profile and entrypoints
      VAProfileH264ConstrainedBaseline:	VAEntrypointVLD
      VAProfileH264ConstrainedBaseline:	VAEntrypointEncSlice
      VAProfileH264Main               :	VAEntrypointVLD
      VAProfileH264Main               :	VAEntrypointEncSlice
      VAProfileH264High               :	VAEntrypointVLD
      VAProfileH264High               :	VAEntrypointEncSlice
      VAProfileHEVCMain               :	VAEntrypointVLD
      VAProfileHEVCMain               :	VAEntrypointEncSlice
      VAProfileHEVCMain10             :	VAEntrypointVLD
      VAProfileHEVCMain10             :	VAEntrypointEncSlice
      VAProfileJPEGBaseline           :	VAEntrypointVLD
      VAProfileVP9Profile0            :	VAEntrypointVLD
      VAProfileVP9Profile2            :	VAEntrypointVLD
      VAProfileAV1Profile0            :	VAEntrypointVLD
      VAProfileAV1Profile0            :	VAEntrypointEncSlice
      VAProfileNone                   :	VAEntrypointVideoProc

And now, in firefox about:support I have the same hardware accelerated codecs that I do in Arch

[Grogan]

Firefox 130.0.1 now.
https://ftp.mozilla.org/pub/firefox/releases/130.0.1/

No release notes, so I don't know whatever clownish reason there is for this update. (I'm of a mind not to bother, because EVERY release of Firefox does something new that I don't like nowadays, often even point releases)

P.S. For example, I resent that stupid fucking weather widget on the new tab page. I've "hidden" it, but it probably still phones home. It's completely useless... I know it's sunny and 20C (We have see through windows!) I'd have to click to go to Accuweather to see anything useful. It gets my location wrong from geo-ip most of the time, and doesn't save settings. It's completely useless, it's only for sponsorship.

Release notes now:
https://www.mozilla.org/en-US/firefox/1 ... easenotes/

Fixed a recent regression causing some UI elements to be rendered as left-to-right instead of right-to-left for users of our Saraiki localization. (Bug 1917175)

Linux: Fixed black rendering of AVIF images when Firefox is built with GCC. (Bug 1916038)

Enterprise

Added an enterprise policy to disable the Firefox Labs section in Settings. (Bug 1911826)

I was right to skip that one, as there is nothing that affects me. Me no speaky Saraiki and I don't compile Firefox with gcc.

[Grogan]

Firefox 131.0 today
https://cdn.kernel.org/pub/linux/kernel ... Log-6.11.1

Of course, nobody ever has release notes ready for things. (Don't blame them... that would feel like a waste of time to me)

Release notes now:

Firefox will now offer to temporarily remember when users grant permissions to sites (e.g. geolocation). Temporary permissions will be removed either after one hour or when the tab is closed.

A tab preview is now displayed when hovering the mouse over background tabs, making it easier to locate the desired tab without needing to switch tabs.

I knew that was coming already, but the tab previews are probably the most welcome feature as I may have several tabs from one site up and they all have the same icon and caption etc.

When suggesting a default translation language, Firefox will now take into consideration languages you have previously used for translations.

We’ve re-introduced the ability to navigate to the search engine home page when the search bar is empty by using shift-enter/shift-click.

Umm, that's what my Home button is for. I have it going to duckduckgo. I don't need middle men. + sign for New Tab page, Home button for search engine. I type URLs in the address bar, not search terms.

Various Security Fixes



The following language is now supported by Firefox translation:
Swedish

The Tab overview (List all tabs) menu has received a new, refreshed icon.

I noticed the larger "List tabs" icon immediately. Considering dismissing it (I don't use it, I seldom open enough tabs that they have to scroll... maximized browser)

[Grogan]

Firefox 131.0.2 today. They skipped .0.1 so they must have fixed something. I checked yesterday, and there was nothing. Release notes, even:

It's just a security fix: "use-after-free in animation timeline"
https://www.mozilla.org/en-US/security/ ... sa2024-51/

I'm going to try building this on Gentoo this time, I got set up for it the other day with a proper rust build and stuff. (they give you a minimal one by default, "rust-bin" and they download binaries to build it. Even their full dev-lang/rust has minimal use flags by default, unsuitable for the way I build Firefox... need demangler/analyzer/profiler etc.)

P.S. Oops! Gentoo keeps llvm utilities in /usr/lib/llvm/18/bin (separating toolchain versions so you can have multiple) but I had forgotten that I specified the variables by absolute path (e.g. AR=/usr/bin/llvm-ar). When things are in alternate locations, there's always some asshole that hard codes things, causing failures. Bad toad...

P.P.S. Ahh, another... and this time I'm not the asshole:

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 0:03.11 ERROR: Could not find libclang to generate rust bindings for C/C++. Please install the necessary packages, run `mach bootstrap`, or use --with-libclang-path to give the path containing it.
*** Fix above errors and then restart with "./mach build"

That's certainly in ldconfig path (/usr/lib/llvm/18/lib64) but this asshole build system isn't following that (It's likely the includes it can't find). I'm going to try using the --with-libclang-path override (instead of LDFLAGS and CPPFLAGS) but I'm not optimistic that it's not going to fail on other dependencies.

That seems to have worked, my build is finally going. 2:30 pm... I thought I had everything in order before I started lol I also had to rebuild xorg-server with the "xvfb" USE flag for profiling but caught that ahead of time. Gentoo doesn't provide the xvfb-run wrapper script so I had to drop that in too. Tested first with glxgears which I also didn't have. Gentoo (miserable pain in the ass that it is) calls that "mesa-progs" instead of mesa-demos or mesa-utils like others would.

Everything went smoothly and the browser runs on both OSes (I wasn't expecting any binary compatibility issues because I keep the systems compatible).

[Grogan]

Here we go again, Firefox 131.0.3
https://ftp.mozilla.org/pub/firefox/releases/131.0.3/

Release notes:
https://www.mozilla.org/en-US/firefox/1 ... easenotes/

Fixed an issue where some users could not access the Bill Pay portion of their bank's site. (Bug 1923500)

Fixed an issue where some VR180 and 360 videos were not properly rendering on YouTube. (Bug 1922278)

Fixed a crash that Windows users with Avast or AVG security software were experiencing when visiting certain sites. (Bug 1919678)

Fixed an issue where the "List all tabs" button was not able to be moved from the toolbar. (Bug 1918681)

Security fix.


#CVE-2024-9936: Undefined behavior in selection node cache

Reporter Atte Kettunen
Impact high

Description

When manipulating the selection node cache, an attacker may have been able to cause unexpected behavior, potentially leading to an exploitable crash.

[Grogan]

Firefox 132.0 today, but no release notes yet.
https://ftp.mozilla.org/pub/firefox/releases/132.0/

I'm going to start the build now, I re-upped my toolchains last week (and did a 131.0.3 build with it). LLVM 19.1.2... got tired of waiting for Arch, Rust 1.82.0, wasi-sdk from git, all good. I've got a lot of flexibility to upgrade LLVM, as I don't link Mesa to it.

On Gentoo, I have dependencies that won't let me do it. Well I can install both, but Mesa wants LLVM 18 and Rust-stable wants LLVM 19... totally bogus. I can't remove the distro's Mesa, even though I completely override it with my own in /opt/mesa using variables. So I put USE flags to keep dev-lang/rust-1.81.0. That's my punishment for not using virtual/rust. So I'm back to building Firefox on Arch.

[Grogan]

It seems they've fixed some performance regressions. I'm getting better graphics benchmark scores. In particular, there's a bouncing ball canvas test that's working fluidly and fast again. For a while it was jerky for the whole thing, then improved a bit where it started off fast and slowed down, but now it's completely smooth. It's one of the tests here:

https://web.basemark.com/

Javascript benchmarks are good too (no regressions... not so much significant improvement)

[Grogan]

I forgot to come back with the Firefox 132.0 release notes. (was more interested in my benchmarks lol). I'm not going to paste all of it this time, because there's a lot of it.

https://www.mozilla.org/en-US/firefox/1 ... easenotes/

Microsoft PlayReady encrypted media playback is now being rolled out to select sites on Windows. Through this support, we are gradually rolling out a 1080p baseline and 4K Ultra HD support with key streaming partners. An added benefit is that viewers get less battery drain and better performance when streaming their favorite movies and shows.

Permit me to interject... dine on fecal matter. I refuse to tolerate DRM (I keep it disabled and object to any content that uses it)

Wide Color Gamut WebGL is now available for Windows and macOS users! With this support, Firefox is bringing a richer, more vivid range of colors to the videos, games, and images on your screen. This implementation currently supports wider color (P3) profiles in 8-bit.

WebRender hardware accelerated rendering is now enabled for most SVG filter primitives, improving performance for certain graphics-heavy content. Accelerated filters are feBlend, feColorMatrix, feComponentTransfer, feComposite, feDropShadow, feFlood, feGaussianBlur, feMerge and feOffset.

Added support for macOS’ new screen and window sharing selection features on macOS 15 and later. Support for macOS 14 will be added in a future release.

The macOS session resume feature has been enhanced. Firefox will now automatically relaunch if it was open before a system restart, like after an OS update.

Firefox now blocks third-party cookie access when Enhanced Tracking Protection's Strict mode is enabled.

Various security fixes.

As a follow-up to our work to upgrade mixed content starting with Firefox 127, HTTP-favicons will now also be blocked if they can not be received over HTTPS instead.

The Copy Without Site Tracking option is now grayed out when no known tracking parameters are found within the link. Additionally, more tracking parameter support has been added for websites such as LinkedIn and Shopee. Please report tracking parameters that aren't removed by filing a bug in Bugzilla.

Heheh... I always thought that was silly "copy without site tracking" always available in the menu. It makes sense to grey it out when there's nothing to remove.

Anyway, there's lots of Developer and Web Platform text that follows. It can be read at the release notes link.

[Zema Bus]

Guess I'll get mine updated. I used to maintain a nightly build just to see the upcoming changes, haven't done that since I did a fresh install of Arch and Slackware, just never got around to it, but I heard there's some big change coming down the pike, I'd like to see what that is before it hits. I still have the directory on my data drive, I just have to run it and update it, and recreate the launcher (I don't care about the profile for that, it's just for testing purposes).

[Zema Bus]

Done!

FirefoxNightly.jpg (62.25 KiB) Viewed 123376 times

[Grogan]

Well, you can let me know about any bright ideas I'm going to hate. (though that far in advance, they may walk them back)

[Grogan]

Well, it's Monday and I just knew there was going to be a Firefox 132.0.1 today. A .0 release can't be allowed to stand
https://ftp.mozilla.org/pub/firefox/releases/132.0.1/

Release notes, even, though very little change:
https://www.mozilla.org/en-US/firefox/1 ... easenotes/

Fixed issues causing intermittent video playback problems on some sites. (Bug 1928484, Bug 1928798)

Fixed an issue causing themes to reset to default after restarting Firefox, in particular when using the Firefox Color add-on. (Bug 1928082)

The video playback issue seems to be just for Windows users, and it seems related to HEVC (x265) acceleration and failing to fall back.

I'd never notice the theme issue, because I just use my native GTK+.

[Grogan]

Of course, because I've been working on other things, I missed a Firefox point release today. I normally check that every day when I get up as I plan what I'm going to do.
https://ftp.mozilla.org/pub/firefox/releases/132.0.2/

Release notes, even.
https://www.mozilla.org/en-US/firefox/1 ... easenotes/

Fixed possible errors when playing encrypted media content through some streaming providers. (Bug 1929491)

Added a mitigation to help reduce the frequency of duplicated push notifications reported by some users. (Bug 1928868)

Fixed hangs when printing from some sites when using the system print dialog. (Bug 1898184)

Fixed a crash which could occur when using Microsoft SSO on macOS. (Bug 1929622)

Fixed a crash in the Network Monitor developer tool which could occur in some circumstances. (Bug 1924882)

Nothing I'd have noticed (I don't play DRM content, I don't allow notifications, I don't print etc.)

[Zema Bus]

One thing I noticed in Nightly is it shows the pid when you mouse over a tab. That may just be a developmental thing but it was interesting to see.

FirefoxNightly_pids1.jpg (185.78 KiB) Viewed 122114 times

FirefoxNightly_pids0.jpg (167.2 KiB) Viewed 122114 times

[Grogan]

It must be for debuggering purposes... it could be useful info if you want to see what the process is doing in the process list.

[Grogan]

Firefox 133.0
https://ftp.mozilla.org/pub/firefox/releases/133.0/

No release notes yet

[Grogan]

Firefox 133.0 Release notes
https://www.mozilla.org/en-US/firefox/1 ... easenotes/

Firefox now has a new anti-tracking feature, Bounce Tracking Protection, which is now available in Enhanced Tracking Protection's "Strict" mode. This feature detects bounce trackers based on their redirect behavior and periodically purges their cookies and site data to block tracking.

The sidebar to view tabs from other devices can now be opened via the Tab overview menu.

GPU-accelerated Canvas2D is now enabled by default on Windows providing a performance improvement.

Various security fixes.

The “Picture-in-Picture: auto-open on tab switch” feature from Firefox Labs now behaves more reliably across a wider range of sites, automatically opening relevant videos while ignoring others.

When server time is available, the "expire" attribute value is adjusted by adding the difference between the server and local times. If the current time is set in the future, cookies that have not expired according to the server time are considered valid.

Web development related:

Firefox now supports the keepalive option in the Fetch API. This feature allows developers to make HTTP requests that can continue to run even after the page is unloaded, such as during page navigation or closing.

Firefox now supports the Permissions API in Worker Context.

Firefox now dispatches beforetoggle events just before a dialog opens and toggle events after the dialog closes, matching the behavior of popovers.

Methods are now available on UInt8Array to convert to and from Base64 and hexadecimal encodings. This is an implementation of a Stage 3 TC39 proposal, for more details see the proposal text.

Added support for image decoding as part of the WebCodecs API. This allows for decoding of images from the main and worker threads.

Malware authors will love that first one

[Grogan]

There is suddenly a Firefox 133.0.3 (no 133.0.1 or .0.2). No release notes, but probably security fixes of some sort. I guess I'll do that tomorrow.

https://ftp.mozilla.org/pub/firefox/releases/133.0.3/

P.S. Release Notes now:

Fixed the missing scrollbar in the Library window, such as when viewing History or Bookmarks. (Bug 1934482)

Fixed a problem where toolbar buttons were not visible on mouseover when using both the Windows High Contrast theme and the Firefox System theme. (Bug 1930840)

Fixed blurry line drawing on some Canvas elements when hardware acceleration is enabled. (Bug 1933668)

Fixed incorrect Firefox window positioning on Windows when restoring from maximized. (Bug 1934238)

That's all, no security fixes.

[Grogan]

That was a good run, almost a month without another point release.

Today there is Firefox 134.0. No release notes yet, but it can be downloaded from here as always

https://ftp.mozilla.org/pub/firefox/releases/134.0/

[Zema Bus]

I was just thinking today that it's been a long time.

[Grogan]

Firefox 134.0 Release Notes
https://www.mozilla.org/en-US/firefox/1 ... easenotes/

Firefox now supports touchpad hold gestures on Linux. This means that kinetic (momentum) scrolling can now be interrupted by placing two fingers on the touchpad.

Hardware-accelerated playback of HEVC video content is now supported on Windows.

Ecosia's availability has been expanded to all languages in the German region along with Austria, Belgium, Italy, Netherlands, Spain, Sweden and Switzerland.

Various security fixes.

Firefox now follows the model HTML specification for transient user activation more closely. This change makes popup blocking less strict in cases where previous versions of Firefox were overly aggressive, reducing erroneous blocking prompts.

A refreshed New Tab layout is being rolled out to users in the US and Canada, featuring a repositioned logo and weather widget to prioritize Web Search, Shortcuts, and Recommended Stories at the top. The update includes changes to the card UI for recommended stories and allows users with larger screens to see up to four columns, making better use of space.

Improved support for debugging web extensions, such as automatically reloading the web extension's source code in the Debugger when the extension is reloaded.

Debugger log-point values are now automatically converted into profiler markers, making it easy to add information to the marker timeline directly from the Debugger.

The Network panel displays information about Early Hints, including a dedicated indicator for the 103 HTTP status code in the user interface.

[Grogan]

There's always a point release soon. Firefox 134.0.1 is out, though no release notes yet.

https://ftp.mozilla.org/pub/firefox/releases/134.0.1/

[Grogan]

Firefox 134.0.1 Release Notes
https://www.mozilla.org/en-US/firefox/1 ... easenotes/

Fixed UI hangs happening on YouTube and Google Docs in some situations (Bug 1939295).

Fixed a startup crash affecting some users upgrading from Firefox 133 (Bug 1941134).

Fixed an issue where search engines selection menus and context menus could be broken if a user had previously reverted to an earlier version (Bug 1940533).

[Grogan]

There's a Firefox 134.0.2 out today, though of course there are no release notes. Binaries and source available here as usual.

https://ftp.mozilla.org/pub/firefox/releases/134.0.2/

I notice they are still putting out 32 bit binaries for Windows and Linux. That kind of doesn't even make much sense for Windows. How many 32 bit Windows 7 installs were there ever, never mind now. I doubt they would be using toolchains old enough for the results to run on XP or Vista.

[Grogan]

Firefox 134.0.2 Release Notes
https://www.mozilla.org/en-US/firefox/1 ... easenotes/

Fixed crash reporter not being displayed for some localized builds (Bug 1940763).

Fixed a regression in Firefox 134 where anchored links in HTML framesets pointing to local files did not work (Bug 1934807).

Fixed an issue in developer tools preventing the resending of network requests when debugging extensions (Bug 1934478).

Fixed an issue where data consumption from service workers may unexpectedly halt (Bug 1941210).

[Grogan]

Firefox 135.0 today. Release notes? Of course not, it always hits the repo first, before announcement. I'll post them when available. Bits available here as usual:

https://ftp.mozilla.org/pub/firefox/releases/135.0/

Also, it's glibc 2.41 time, which means working on both distros first (bootstrap toolchains etc.) before I compile anything else. It never rains, but it snows.

[Grogan]

Firefox 135.0 Release Notes:

https://www.mozilla.org/en-US/firefox/1 ... easenotes/

Lots of bollocks here

Firefox Translations now supports more languages than ever! Pages in Simplified Chinese, Japanese, and Korean can now be translated and Russian is now available as a target language for translating into.

The credit card autofill feature is now being gradually rolled out to all users globally.

AI Chatbot access is now being gradually rolled out to all users. To use this optional feature, choose AI Chatbot from the sidebar or from Firefox Labs. Then, complete the provider selection to see the chat interface become available on the sidebar.

Firefox now enforces certificate transparency, requiring web servers to provide sufficient proof that their certificates were publicly disclosed before they will be trusted. This only affects servers using certificates issued by a certificate authority in Mozilla's Root CA Program.

Additionally, the CRLite certificate revocation checking mechanism is also being gradually rolled out, substantially improving the performance of these checks.

Firefox now includes safeguards to prevent sites from abusing the history API by generating excessive history entries, which can make navigating with the back and forward buttons difficult by cluttering the history. This intervention ensures that such entries, unless interacted with by the user, are skipped when using the back and forward buttons.

Users on macOS and Linux are now given the option to close only the current tab if the Quit keyboard shortcut is used while multiple tabs are open in the window.

Made improvements to the Translations feature which will reduce the likelihood that models will invent new, made-up words under some circumstances.

Various security fixes.

The refreshed New Tab layout previously rolled out in Firefox 134 to users in the United States is now being made available in all countries where Stories are available. It features a repositioned logo to prioritize Web Search, Shortcuts, and Recommended Stories at the top. The update also includes changes to the card UI for recommended stories and allows users with larger screens to see up to four columns for better use of space.

The “Do Not Track” checkbox has been removed from preferences. If you wish to ask websites to respect your privacy, you can use the “Tell websites not to sell or share my data” setting instead. This option is built on top of the Global Privacy Control (GPC).

The "Copy Without Site Tracking" menu item was renamed to "Copy Clean Link" to help clarify expectations around what the feature does. "Copy Clean Link" is a list based approach to remove known tracking parameters from links. This option can also now be used on plain text links.

Linux binaries are now provided in XZ format, replacing the previous BZ2 format, offering faster unpacking and smaller file sizes.

[Zema Bus]

Some new settings in Firefox 137 Nightly (introduced in Firefox 136 from what I heard):

Firefox137_settings.jpg (25.26 KiB) Viewed 79378 times

Here's the settings for the container tabs:

Firefox137_Container_Tabs_settings.jpg (31.31 KiB) Viewed 79378 times

And here's what the "Learn More" link links to.