Firefox Community Forum

HI,

I updated recently the Firefox installation on my Mac to 139.0.1. I noticed that I can no longer print from certain websites using Firefox. One example is from Alaskair, where I tried to print a ticket and it was just sitting there trying. I had no problem printing the same with Safari.

Is this a known problem? Any suggestion (other than just give up on Firefox and use Safari) for what to do about this?

Every time I update Firefox, new bugs cause annoying problems. That's why I usually not updating for a long time.

Thanks.

Hello everyone,

Is there any software that allows software developers to see what the CSS they are creating is doing in real time ?

Because I can't imagine they're doing it blindly. I see some CSS files that have hundreds, possibly thousands, of lines.

If there is software that helps them see immediately what their CSS is doing, can it be used to create extensions (add-ons) for Firefox ?

Thank you for your attention.

I have a 2020 model MacAir with M1 chip, running Sequoia 15.6.1 and Firefox 143.0. When I bookmark a website, I no longer get the option to select which Folder to save it in. I have to bookmark the site, then edit the bookmark in order to place it in the right folder. Is there a fix for this problem? I've tried several times searching on the Help and Support pages but don't see anything. Thank you!

I recently installed Win 11 on a new Acer Aspire (with MSI MAG244F monitor) but the issue seems to be present on my Acer Nitro 5 with built-in monitor as well.

I don't think it's an Acer issue but I am only running Win 11 on the two Acer machines. If I open a web page with colored graphics or pictures and then drop down a menu of the browser (bookmarks, etc.) the colors of the graphics bleed through. It's annoying and somewhat obstructive. It does not occur if a window from a different app is opened on top of the browser window no matter how bright the colors are.

I attached a few edited screenshots to show the issue. The edits are only to cover personal information etc.

The issue seems to be color saturation and does not occur on my other Win 10 machines or in other browsers. Not even the same version Firefox on the Win 10 machines.

Is there a way to increase the opacity of the drop downs or lower the color saturation in the Firefox browser?

I really like the possibility of unloading tabs but still have them visible as I need to be able to backtrack some searches which are many levels deep. One thing I have discovered however, is if the tabs are grouped, you cannot unload them and that poses a problem for me as I have many many tabs that live in various groups across my tab bar. Is there any way of unloading these tabs while they reside in a group or is there a workaround I have not thought of yet?

Cheers and thanks everyone for your support and suggestions ....

Dear Community,

Using Cloud applications via browser and my mail webbased I have Firefox installed. This browser was in my opinion always the better choice, but last months I experience strange behavior, cache issues, freezing pages, crashing tabs which is very annoying and frustrating when working in the cloud. In the same session it is possible that I suddenly can't open objects anymore or click on URL's, buttons not reacting or even can't login again, even when I just was logged in successfully. After refreshing and restarting the browser or sometimes even after restarting my device, everything is working properly again for a while. I can't explain and my questions are: - anyone experiencing, familiar with and or know of this same kind of browser behavior and - if yes, how to solve this?

Thanks in advance and kind regards,

Aad

Hi, I set up the vertical tabs and I like them. However they're very unstable and so is the tab sidebar. The expand on hover feature only works for a short time. Then the x to close a tab disappears and the sidebar gets stuck open or closed. If it gets stuck open, it covers the settings and AI and history sidebars so I need to close it manually to use them. Yesterday I lost 3 of my 6 pinned tabs. After closing and opening FF, they were just gone.

Also my tab groups will suddenly disappear. This started in the previous version and still happens, and I lose the sites I had collected. Plus FF has been very slow to load.

So yesterday I gave up and reverted to horizontal tabs. Like magic FF suddenly worked perfectly and very fast. I'm not enough of a techie to have any idea of what is causing what and would really appreciate any advice.

I have a pdf document with live hyperlinks to websites. However, when I click on them, they open in Edge and not my default browser Firefox. Any suggestions? Have set default browser to Firefox and default PDF to Acrobat reader.

https://bijoy-bayanno.en.softonic.com/download

Unable to communicate securely with peer: requested domain name does not match the server’s certificate.

HTTP Strict Transport Security: false HTTP Public Key Pinning: false

Certificate chain:

MIIDoTCCAyigAwIBAgISBt1jIMHQcUr8G6c8XNmR5FwgMAoGCCqGSM49BAMDMDIx CzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQswCQYDVQQDEwJF NzAeFw0yNTA4MjUxMTA1NDNaFw0yNTExMjMxMTA1NDJaMBQxEjAQBgNVBAMTCW5j bmQubW9iaTBZMBMGByqGSM49AgEGCCqGSM49AwEHA0IABIDWlCcTOIVq9fZ2ZY14 ShZBXbaCJ5btpMa/rTb85f9d71RkwmYKRbzC9msPBccCdee0PyoKDSqyzjQOG+vj ieyjggI6MIICNjAOBgNVHQ8BAf8EBAMCB4AwHQYDVR0lBBYwFAYIKwYBBQUHAwEG CCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFBA8EX0SjFNrp9aC+1+n WyLqFcaeMB8GA1UdIwQYMBaAFK5IntyHHUSgb9qi5WB0BHjCnACAMDIGCCsGAQUF BwEBBCYwJDAiBggrBgEFBQcwAoYWaHR0cDovL2U3LmkubGVuY3Iub3JnLzA1BgNV HREELjAsggsqLm5jbmQubW9iaYISKi5wb3J0YWwubmNuZC5tb2JpggluY25kLm1v YmkwEwYDVR0gBAwwCjAIBgZngQwBAgEwLQYDVR0fBCYwJDAioCCgHoYcaHR0cDov L2U3LmMubGVuY3Iub3JnLzMzLmNybDCCAQYGCisGAQQB1nkCBAIEgfcEgfQA8gB3 AKRCxQZJYGFUjw/U6pz7ei0mRU2HqX8v30VZ9idPOoRUAAABmOEdWuoAAAQDAEgw RgIhANAqmB09P1K7nB/tTA5/9KQoSMbq5jv3d3FnRoyWDne1AiEAmj10PNXci4+u yskKyvWi38VZL9torvbu9cPTlE21OFcAdwAaBP9J0FQdQK/2oMO/8djEZy9O7O4j QGiYaxdALtyJfQAAAZjhHWLpAAAEAwBIMEYCIQCDkfK/FmqNVtCC3nm/C2L1reTc AemFa2/lMeeaRbSraQIhAIieHUKeSnv2gri+283n3z+OxHBN6fzod+EoOlh6mNwA MAoGCCqGSM49BAMDA2cAMGQCMBEppK6jLqVKb5iFrgc0z1AB5Uie5RA9+p5Xx3Gx DgLVlfXlvSfiNn6kuqeeTGujFgIwEXQqkkcSpnJs5zcsUNA0Qxneo7ClOk2ASqBW qbVvX/6WKzSXWYi5/ocmBd/ibCKf

MIIEVzCCAj+gAwIBAgIRAKp18eYrjwoiCWbTi7/UuqEwDQYJKoZIhvcNAQELBQAw TzELMAkGA1UEBhMCVVMxKTAnBgNVBAoTIEludGVybmV0IFNlY3VyaXR5IFJlc2Vh cmNoIEdyb3VwMRUwEwYDVQQDEwxJU1JHIFJvb3QgWDEwHhcNMjQwMzEzMDAwMDAw WhcNMjcwMzEyMjM1OTU5WjAyMQswCQYDVQQGEwJVUzEWMBQGA1UEChMNTGV0J3Mg RW5jcnlwdDELMAkGA1UEAxMCRTcwdjAQBgcqhkjOPQIBBgUrgQQAIgNiAARB6AST CFh/vjcwDMCgQer+VtqEkz7JANurZxLP+U9TCeioL6sp5Z8VRvRbYk4P1INBmbef QHJFHCxcSjKmwtvGBWpl/9ra8HW0QDsUaJW2qOJqceJ0ZVFT3hbUHifBM/2jgfgw gfUwDgYDVR0PAQH/BAQDAgGGMB0GA1UdJQQWMBQGCCsGAQUFBwMCBggrBgEFBQcD ATASBgNVHRMBAf8ECDAGAQH/AgEAMB0GA1UdDgQWBBSuSJ7chx1EoG/aouVgdAR4 wpwAgDAfBgNVHSMEGDAWgBR5tFnme7bl5AFzgAiIyBpY9umbbjAyBggrBgEFBQcB AQQmMCQwIgYIKwYBBQUHMAKGFmh0dHA6Ly94MS5pLmxlbmNyLm9yZy8wEwYDVR0g BAwwCjAIBgZngQwBAgEwJwYDVR0fBCAwHjAcoBqgGIYWaHR0cDovL3gxLmMubGVu Y3Iub3JnLzANBgkqhkiG9w0BAQsFAAOCAgEAjx66fDdLk5ywFn3CzA1w1qfylHUD aEf0QZpXcJseddJGSfbUUOvbNR9N/QQ16K1lXl4VFyhmGXDT5Kdfcr0RvIIVrNxF h4lqHtRRCP6RBRstqbZ2zURgqakn/Xip0iaQL0IdfHBZr396FgknniRYFckKORPG yM3QKnd66gtMst8I5nkRQlAg/Jb+Gc3egIvuGKWboE1G89NTsN9LTDD3PLj0dUMr OIuqVjLB8pEC6yk9enrlrqjXQgkLEYhXzq7dLafv5Vkig6Gl0nuuqjqfp0Q1bi1o yVNAlXe6aUXw92CcghC9bNsKEO1+M52YY5+ofIXlS/SEQbvVYYBLZ5yeiglV6t3S M6H+vTG0aP9YHzLn/KVOHzGQfXDP7qM5tkf+7diZe7o2fw6O7IvN6fsQXEQQj8TJ UXJxv2/uJhcuy/tSDgXwHM8Uk34WNbRT7zGTGkQRX0gsbjAea/jYAoWv0ZvQRwpq Pe79D/i7Cep8qWnA+7AE/3B3S/3dEEYmc0lpe1366A/6GEgk3ktr9PEoQrLChs6I tu3wnNLB2euC8IKGLQFpGtOO/2/hiAKjyajaBP25w1jF0Wl8Bbqne3uZ2q1GyPFJ YRmT7/OXpmOH/FVLtwS+8ng1cAmpCujPwteJZNcDG0sF2n/sc0+SQf49fdyUK0ty +VUwFj9tmWxyR/M=

hopefully I've chosen the right help category.

When I try to shut down or restart firefox (fully updated) the file in my system monitor called firefox-bin persists. I have to end or kill the process there to turn off the browser. Due to this situation, I cannot restart the browser in troubleshoot mode or anything else. It's cold start or nothing. 99% of what I use firefox for is youtube. There are a couple of channels that when I open a video, the page will not fully load and will not play. The comments won't load either. Also, while those tabs are open my CPU usage skyrockets and memory maxes out...which freezes the computer. It's not all channels.. maybe 4 so far. I've manually turned off all extensions/themes, rebooted and tried again.. no joy. Full system freeze. I've tried to do a clean reinstall over the old files in the Linux terminal.. it just says it's already updated. I could be doing that wrong since the instructions I found on this site only apply to windows and mac machines and I was kind of winging it. Thoughts on what I can do to fix things?

There's a button below this box that suggests sharing browser data.. I'm not using firefox right now, so that wouldn't help.

Hi all. I'm experiencing a frustrating video playback issue in Firefox on my Mac. Whenever I move my cursor, the video becomes noticeably blurry until I stop moving it. Then it takes a second and returns to normal sharpness. This problem is exclusive to Firefox and doesn't happen in other browsers. One interesting quirk is that it seems like the lower the video resolution is, the more noticeable the blur appears.

This video on Reddit shows my issue perfectly: https://www.reddit.com/r/mac/comments/qbecrh/m1_has_problem_when_playing_video_and_moving/

I've already tried several common fixes, including disabling hardware acceleration and other graphics settings such as tinkering with gfx.webrender, but nothing has resolved it. I'm hoping someone on the forums might know if this is a known bug or if there's a solution I haven't found yet.

Specs: MacBook Pro w/ M1 Max (2021) macOS Sonoma 14.1.2 Firefox 143.0 (aarch64) ... but the issue has been going on for years so I doubt that the macOS or Firefox version has anything to do with it.

I'm at a total loss here and would be immensely grateful for any help.

When I upload photos to facebook.com regularly Firefox freezes. The radio channel I am listening to will keep on going and the task manager does not indicate Firefox is frozen. It will not respond to any mouse clicks though. I removed Firefox and reinstalled but that did not fix anything. thanks!

Hello, hope you're having a nice day.

I'm encountering an issue in my web app: when typing a character with an accent (such as á, ä, etc.), the textarea clears out and becomes disabled, making it unusable for Spanish speakers. This behavior worked correctly until a few months ago. The application is built with Vaadin.

Below are the mozregression logs for this issue. The commit that first showed this behavior is a24b524f, worked fine upto 3b954f08.

2025-09-17T08:58:01.828000: INFO : Narrowed integration regression window from [8ba9b64c, a24b524f] (4 builds) to [3b954f08, a24b524f] (2 builds) (~1 steps left) 2025-09-17T08:58:01.831000: DEBUG : Starting merge handling... 2025-09-17T08:58:01.832000: DEBUG : Using url: https://hg.mozilla.org/integration/autoland/json-pushes?changeset=a24b524fe1b32a658d105df47dc723c9ec8e15d8&full=1 2025-09-17T08:58:01.832000: DEBUG : redo: attempt 1/3 2025-09-17T08:58:01.832000: DEBUG : redo: retry: calling _default_get with args: ('https://hg.mozilla.org/integration/autoland/json-pushes?changeset=a24b524fe1b32a658d105df47dc723c9ec8e15d8&full=1',), kwargs: {}, attempt #1 2025-09-17T08:58:01.833000: DEBUG : urllib3.connectionpool: Resetting dropped connection: hg.mozilla.org 2025-09-17T08:58:02.871000: DEBUG : urllib3.connectionpool: https://hg.mozilla.org:443 "GET /integration/autoland/json-pushes?changeset=a24b524fe1b32a658d105df47dc723c9ec8e15d8&full=1 HTTP/1.1" 302 0 2025-09-17T08:58:04.128000: DEBUG : urllib3.connectionpool: https://hg-edge.mozilla.org:443 "GET /integration/autoland/json-pushes?changeset=a24b524fe1b32a658d105df47dc723c9ec8e15d8&full=1 HTTP/1.1" 200 None 2025-09-17T08:58:04.133000: DEBUG : Found commit message: Bug 1941973 - Make `EditorBase::OnCompositionChange` always dispatch `input` event with a new pref r=m_kato

The reported web site in bug 1910865 sets `HTMLInputElement.value` to the latest value explicitly at every `input` event except when during a composition. When it's in a composition, it stores the latest value at `input` events during the composition and set it at `compositionend` event listener.

Currently, Gecko dispatches the events as the following order at ending a composition: 1. `beforeinput` whose `isComposing` is `true` 2. `compositionend` 3. `input` whose `isComposing` is `false`

Therefore, if user chooses the commit string from the candidate list, the commit string is not notified by `input` event before the `compositionend`.

On the other hand, Chrome dispatch the events as the following order: 1. `beforeinput` whose `isComposing` is `true` 2. `input` whose `isComposing` is `true` 3. `compositionend`

I.e., no `input` event is fired after `compositionend` and there is no `input` event whose `isComposing` is `false`. This is handled in the spec issue [1], but not yet resolved.

Perhaps, we can dispatch redundant `input` event before `compositionend` event, i.e., 1. `beforeinput` whose `isComposing` is `true` 2. `input` whose `isComposing` is `true` 3. `compositionend` 4. `input` whose `isComposing` is `false`

This breaks the pair of `beforeinput` and `input`, but I guess it's not important for web apps especially for the redundant `input` event case.

1. https://github.com/w3c/uievents/issues/202

Differential Revision: https://phabricator.services.mozilla.com/D234620

2025-09-17T08:58:04.134000: DEBUG : Did not find a branch, checking all integration branches 2025-09-17T08:58:04.134000: INFO : The bisection is done. 2025-09-17T08:58:04.134000: INFO : Stopped

Hi! Firefox now has two profile managers. The old one can be used so that I can open two Firefox instances with different desktop files on Linux with the "-P and --no-remote" command line flags. Is this also possible with the new profile manager in Firefox that came with version 138, which is similar to Chrome's? With Chrome this can be done with the "--profile-directory" command line flag. Can't find information about this. /Regards

Dear Sir or Madam, since one of the last updates, Firefox has been automatically creating a bookmark, this one, Growatt. I haven't visited the Growatt site in a long time, but more Growatt bookmarks are being saved to my bookmarks every day! I've removed Growatt cookies in the settings, but Growatt bookmarks keep saving automatically! Please suggest possible solutions; otherwise, I'll switch to a different browser. Thank you, sincerely, Werner Prestele

Why in many articles the Reader View access button in not enabled in URL right hand side. For example

https://www.business-standard.com/immigration/no-visas-for-foreigners-celebrating-charlie-kirk-s-killing-warns-us-govt-125091700297_1.html