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Ok so I usually choose these option to remember history and from time to time delete Browsing & download history and Temporary cached files and pages.

https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2025-06-28-08-45-55-a5277f.png

Note: I have "Open previous window and tabs" ticked in general settings which also has a restore previous session option in the history menu. This brings back previous session with tabs etc as is when I close FF. https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2025-06-28-08-45-51-cf2daf.png

I thought I could automate this on exit but don't think its working right. So I change the option to "use custom settings for history" and tick all three options:

Remember browsing and download history Remember search and form history Clear history when Firefox closes For "Clear history when Firefox closes" I ticked Browsing & download history and Temporary cached files and pages. https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2025-06-28-08-45-43-b10213.png

The issue is the restore session option is missing and FF opens with all previous tabs gone. I am frankly not even sure what else is missing such as cookies, site data etc. Is this meant to work like so?

Hello,

There has been an upgrade of Firefox ESR to version 128.3 on Debian 12 bookworm.

Before the update, I could play videos, now I can't.

I precise I can play videos on Chromium, or with the video players.

I have libavcodec58, libavcodec-extra59, ffmpeg 5.1.6 packages installed.

There is an error in the console: Media resource xxx.webm could not be decoded. Specified “type” attribute of “video/mp4” is not supported. Load of media resource xxx.mp4 failed.

This command seems to indicate the session is X11 and not Wayland: ``` loginctl show-session 1 -p Type Type=x11 ```

I'm using this shortcut all the time and I recently found out it doesn't work as expected. From the Firefox documentation the ctrl+shift+t should re-open the latest closed tab, but this is not the case for me, it always re-open the latest closed window. Which behave exactly as ctrl+shift+n.

From my short research it's not possible to customize Firefox shortcuts without using an extensions, therefore I also don't know how to verify if the shortcuts have changed just form my browser/configuration.

When i log into Instagram, Gmail, or Facebook i get a message that says "this browser no longer supported. Update to newer version" i am running 132.0.2. i have been using Firefox since version 0.7 and still prefer FF to all other browsers.

On certain websites, I see that the background color of the new tab page replaces the default background color making the content unreadable, example:

If I browser this website: https://typespec.io/docs

Here's what I see (see the firsrt attached screenshot). Now, if I open the same URL in Private browsing, the background color changes too (see the second screeenshot). In the 3rd screenshot I'm adding the reference rendering, that's how I expect this website to render (Edge).

In the screenshot 1 and 2, the background color is exactly the same as the one used by the new tab page when I open a new tab.

Questions: 1) Why is that? 2) Can I change that?

Context: I'm trying to switch to Firefox (from Edge)

Hi!

What goes wrong with a simple tracking request on the UPS website? Try my actual case with the following link: https://www.ups.com/track?tracknum=1ZA06B736800244687&loc=fi_FI&requester=QUIC%2F/ The response in Finnish is always: "Emme voi suorittaa seurantapyyntöäsi tällä hetkellä. Yritä myöhemmin uudelleen." A quick and dirty translation is: "We cannot execute your request right now. Try again later".

This is an everlasting problem. But try the exactly same link on Chrome or Edge, and it works fine.

Best regards, Tom Lindeman Helsinki, Finland [edited email from public community support forum]

I've noticed recently that some Unicode characters are not rendering properly on some websites. Specifically the Unicode characters for Mathematical Bold Capitals, though there may be others. I've noticed this issue on Twitch and GitHub. Screenshots for the repository sainnhe/everforest are attached along with the Inspector. Notice the characters do not appear properly on the webpage but are rendered just fine in Inspector. I also attached the screenshot for Unicode Mathematical Bold Capital E.

I am running Firefox version 132.0 on macOS Sequoia 15.0.1. The problem remains in Troubleshoot Mode. The problem does not appear in Chrome or Safari. The problem does not appear on my iPhone or Android tablet.

In posts with similar issues I've seen the suggestion to toggle "Allow pages to choose their own fonts", the issue does not respond to changing this setting (it is on in all the screenshots).

I took a look today and I had 237 MB in cookies! This was after clearing the cache of all files. I've only had this (new) machine a couple months.

Short version: Sites have "cookies" from 200kb to as much as 34MB! For many of the sites over 3MB I have no account and have visited them only briefly.

To be clear, I don't care about the space being used. It's trivial. But what the heck is FFox storing and calling it "cookies"? Last I checked, a site was still limited to 4K size cookies and perhaps 50 per domain. So how are we getting to MB+ sized "cookies" per site? Again, the cache was cleared, so what's left aside from trivial cookie files of <4KB?

Desktop; Windows 11; Firefox 139.0.4 64 bit

Is it possible to view the contents of two tabs simultaneously? I have been in many situations where it would be very helpful to view two different web pages side-by-side to more easily make comparisons. Opening a new window and viewing them side-by-side is similar but being able to pick two tabs to view in one browser would be a lot faster and easier to control.

I have a problem on the aliexpress website. (in other browsers everything works fine) When I open tabs with goods on aliexpress. and start switching between them, then at the moment of switching to another tab, my previous tab itself is updated and opens the main page. And there is no way to even press the “Back” button. The browser seems to reload the page completely. The chatgpt was unable to find a solution. All hope is on you. There are no errors. It's just that the aliexpress page reloads by itself when I switch to any other tab.

Hi, I don't understand why I can't access the Accor Hotels website using my preferred browser, Firefox. I'm using an iMac with OS Catalina v 10.15.7 and Firefox 147.0.1 (64 bit)

I can access the site using Chrome. Chrome version is 'This computer is using macOS 10.15. Learn more Version 128.0.6613.138 (Official Build) (x86_64)'

I've checked every Firefox setting I can think of, passwords etc. but the site freezes. Please see attached screenshot. Accor tech support say they have no problem at their end.

This is the link to Accor - https://login.accor.com/as/authorization.oauth2?client_id=all.accor&response_type=code&persistent=yes&accorregister=true&origin=LOGIN&request=eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJjbGllbnRfaWQiOiJhbGwuYWNjb3IiLCJyZXNwb25zZV90eXBlIjoiY29kZSIsInJlZGlyZWN0X3VyaSI6Imh0dHBzOi8vYWxsLmFjY29yLmNvbS9sb3lhbHR5LWZ1bm5lbC9jaGVjay1hdXRoZW50Lmh0bWw_YXBwSWQ9YWxsLmFjY29yIiwic2NvcGUiOiJvcGVuaWQgQVBJV0VCLlVTRVIuQUxMIEFQU1IuQUxMIiwidWlfbG9jYWxlcyI6ImVuIiwic3RhdGUiOiI1ZjcwNzA5NjdiNWVkODBjYWZmOGY5Iiwibm9uY2UiOiJjNmNhYzBlMzQ4Zjk1NmNlMGQxNWE2IiwiZXhwIjoxNzY5MjY0NTMyLCJpYXQiOjE3NjkyNjI3MzJ9.DrUJZC2GmtZoLJAWv7lYORQij3C0tcwq4bGNezAINae8_qSHgs4hOKKiq0Cso6sJnhODcMeyrMOP-v1uZBR4Lt0NMpW-8CmprMoSmtORWrD5lWngZg2_3W4gfWViC_Phkj5tVzxdpMx5UoRWC-zvALjP_PNhE4Ca70UnRnvqDi4LFdOYZm4S52kqn_TBQq2VtSzRlLJZwBwAKUIgQG7fYaLknLXnbTd9zKSGHlwEAeO94Y6o59sQ3fHFWrWqjuJFbEl1MJEPu0tPJREmy4D70LkpV8N3TTMfDNzG0O_eLj4wX9Mipv8Q9jdOoTG8wodT5zXLkL0mRYlcdygo_MacIQ&redirect_site_uri=https%3A%2F%2Fall.accor.com%2Fa%2Fen.html%3Futm_term%3Dmar%26gclid%3DEAIaIQobChMI6r3v44eOkgMV1SV7Bx2bTCqUEAAYASAAEgJojfD_BwE%26utm_campaign%3Dppc-ach-mar-goo-uk-en-pure-mix-sear-%26utm_medium%3Dcpc%26utm_source%3Dgoogle%26utm_content%3Duk-en-ALL-ALL

Other sites all seem to work ok.

Any ideas pleas on why just this website and how I can access it without having to swap browser?

Hello=)

I am using Firefox v128.2 esr 64bit on big sur 11.7.10..

In firefox there is always this white line on top of the screen when fullscreening a yt video... (but also partial bars in other situations-randomly) (temp workaround : cmd+up arrow . But, whenever you pause or press something it reappears.

Can we please implement a more elegant solution?

Thanks a bunch , dear Mozillians=)

Have an excellent day=)

Netflix says I need the the latest version of firefox. At the top of the screen it says "Firefox is installing components needed to play the audio or video on this page. Please try again later"

As far as I can tell nothing is installing and I need to actually do something to resolve this issue. Unfortunately I don't know what. Please help me resolve this issue.

Since 141 update I have constant problems with youtube. Page does not load at all or loads only partially. Icons on sidebar are broken, youtube logo is black. I tried disabling ublock and greasemonkey but it did not help. Refreshing page multiple times and using ctrl+f5 sometimes helps but issue returns often, every few videos/visits. Clearing cookies helps but only for few hours and then issue returns.

Is it related to WebGPU support that was supposed to be added in 141? Can I disable it somehow?

The list of previously visited sites in firefox windows seems to have shrunk in some recent update of firefox. Now, when I click the address bar I only get 5 options, the first being search with google and the remaining 4 being previously visited sites. Used to be that list was much longer. Is there a way to customize this, or revert it back to where it contains 10+ items?