Firefox Support Forum

I am using Firefox Developer Edition Version: 110.0b5 (64-bit) on M1 Mac running Ventura 13.1.

I am building an webapp some XHR triggering in background but it is not necessary to run the application (running fine on other browsers). But on Firefox Developer Edition, It shows a error window with the message and stops loading the application.

Firefox can’t establish a connection to the server at localhost:4000.

localhost:4000 is the failing XHR request domain. I have attached the screenshot.

How to ignore the XHR failing errors just like other browsers?

I use Kubuntu 23.04 with Firefox from mozillateam/ppa apt repository, got update to FF 119 today (package 119.0+build1-0ubuntu0.23.04.1~mt1) and after the update Firefox stopped using system-wide installed fonts (either from /usr/share/fonts or from ~/.local/share/fonts).

So for example fc-list finds Gentium Plus (/usr/share/fonts), Iosevka and Junicode (~/.local/share/fonts) on my system: % fc-list -f '%{family}: %{file}\n' | rg -i 'gentium plus:' Gentium Plus: /usr/share/fonts/truetype/gentiumplus/GentiumPlus-Italic.ttf Gentium Plus: /usr/share/fonts/truetype/gentiumplus/GentiumPlus-BoldItalic.ttf Gentium Plus: /usr/share/fonts/truetype/gentiumplus/GentiumPlus-Bold.ttf Gentium Plus: /usr/share/fonts/truetype/gentiumplus/GentiumPlus-Regular.ttf % fc-list -f '%{family}: %{file}\n' | rg -i 'iosevka:' Iosevka: /home/silmeth/.local/share/fonts/iosevka/iosevka.ttc Iosevka: /home/silmeth/.local/share/fonts/iosevka/iosevka.ttc Iosevka: /home/silmeth/.local/share/fonts/iosevka/iosevka.ttc Iosevka: /home/silmeth/.local/share/fonts/iosevka/iosevka.ttc % fc-list -f '%{family}: %{file}\n' | rg -i 'junicode:' Junicode: /home/silmeth/.local/share/fonts/junicode/otf/Junicode-Bold.otf Junicode: /home/silmeth/.local/share/fonts/junicode/otf/Junicode-Regular.otf Junicode: /home/silmeth/.local/share/fonts/junicode/otf/Junicode-Italic.otf Junicode: /home/silmeth/.local/share/fonts/junicode/otf/Junicode-BoldItalic.otf

but when I try to apply the style `font-family: Gentium Plus`, `font-family: Iosevka`, or `font-family: Junicode` to an element, Firefox doesn’t use those fonts and instead in the element inspector I see Noto Serif is being used instead.

Before the update the appropriate system fonts were being chosen for rendering by Firefox.

A required site I need to use for work has a popup dialog box that never works right in Firefox, the popup dialog shows up as a blank box or doesn't popup at all in Firefox. I must print what is supposed to be there in that dialog box. It's been like this for a couple of years now. I've tried everything imaginable and searched high and low for the fix. I have had this particular site set as an exception to popups blocking, and then I also set it to have all popups unblocked. Still doesn't work either way. I have to use the site in Brave instead, and it's the only way I can get what I need done. I used to love Firefox SO much, I used it exclusively. But it has undergone some unpleasant changes recently, such as hiding my open tabs on my iphone. Because of these issues I find myself using other browsers more and more.

I'm having an issue with a particular text field. When entering any text into said text field, my CPU will shoot to 100% usage on some cores, hang for a bit and then print the text after a few seconds. I have an Intel 13900k @ 5.5ghz.

I can't provide a link to the text box as it's a WordPress CMS on my local machine. This issue does not present itself on the competitor browser.

A few troubleshooting steps I've taken:

• Re-install Firefox
• New profile
• Disable all extensions
• PC safemode + Firefox safe mode
• Tested dev/nightly/stable (I'm using BETA daily)
• Disabled accel

Hopefully I'm able to have an expert look at my profiler to help determine what the issue is. I'm not knowledgeable in this area unfortunately. https://share.firefox.dev/3s60ISV

Thank you.

Hi Today I updated Firefox to version 106.0 and I can't get rid of the "arrow button" from top right (screenshot attached - near the minimize button, I marked it). The function of this button is clear for me - tabs management. But I can manage my tabs without special button for it. I want to remove it. I tried right clicking on it, but the "remove from toolbar" option is unavailable. I tried to customize toolbar, but it won't work either (I can't take it from te toolbar).

How to remove this button?

How do I return ctrl+c to just copying the selected text?

I have checked the extension shortcuts and not found anything there. I have also searched extensively for solutions, before making this post.

Firefox just updated itself to v106 (x64). Opening Microsoft outlook web mail (https://outlook.office.com/mail/) gives me the opening envelope between 5 & 10 times, then an error screen that says "multiple redirects detected". Hitting the 'refresh' link works fine, and no trouble after that, so maybe a sign in issue? Seems to be a new problem; didn't happen yesterday.

As of today, I'm seeing black text on the black background of every site with a dark theme, including Google Search and Github

I'm running Firefox Developer Edition 105.0b8 on macOS 12.5.1. My macOS Appearance is set to Dark

Switching the Website Appearance config setting between Firefox Theme, System Theme, Dark, or even Light does not change the colour of the text

Good day.

Im having an issue with my Firefox developer Eidition (v 117.0b9 -64bit), where im not able to "paste" text on whatsapp web since 18th Aug 2023. (pasting imgs is fine though)

Tested other ways to paste using right click / Ctrl+V but it didnt work.. and if i copy something from same whatsapp and re-apply paste, also does not work (again to remind, only pasting text does not work) !

Checking though other browsers "Edge" seems to be ok and i was able to "paste" text normally. I hv yet to check on the issue on normal Firefox Browser.

Using Windows 10. Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz 1.99 GHz RAM 32.0 GB

Since other browsers did not have this issue, i thought of raising this for Firefox devs to hv a look at it. Maybe some update done recently caused this glitch. So im doing my part in sharing feedback to improve an open source software which i use.

Thank you for the amazing browser.

Whenever I try to open Firefox, it takes about 25 seconds to boot. This behavior can be observed both with all the extensions running and in safe mode. The link to the profiles are shared below.

With extensions: https://share.firefox.dev/3riMPQZ In safe mode: https://share.firefox.dev/3OadE31

I have been noticing this for a few months now. Firefox works just fine after wasting ~25 seconds initially. I have also reinstalled Firefox multiple times. Right after the installation, the boot-up can be very fast (less than 1 second). However, after using Firefox for a few hours, the problem comes back.

I am not well-versed in reading Firefox profiler reports. So, please help me figure out what's actually happening in those ~25 seconds.

Steps to reproduce:

1. Have Google as the default search engine.

2. Type a search string into the address bar.

3. The address bar briefly shows a URL for the Google Search results.

4. The address bar is very quickly overwritten with the original search string.

See screenshot for example.

How do I stop step #4 happening? I want the URL to remain in the address bar, for example to be able to give somebody a link which executes the google search.

I think this is new in FF121.

For some reason every type of embedded video, youtube, webms, etc, all show up washed out in white. This only happens in FF and I have tried a few ways to fix, but no luck. Any ideas?

Thanks.

I am attempting to build a script (extension) that will open any focused page in Firefox with Microsoft Edge from the context menu. The intention is to utilise the existing microsoft-edge URL Protocol in Windows instead of a native client.

QUESTION WILL MOVE TO https://discourse.mozilla.org/

Buttons like 3 bar preferences button, notification etc are broken or not visible just the highlight is visible and click the notification button also break the whole browser

Hello Everyone,

After inserting the proxy information, webpages in the container tab refuse to load/connect, I insert the IP address and I've also tried the Fully qualified domain name, using the type://host:port syntax, I get "The proxy server is refusing connections" and "The connection has timed out" error messages.

If I setup the proxy via the settings menu the entire browser uses the proxy server address, I am trying to specify a different proxy server for each container.

Discord hyperlinks will no longer open when Firefox Developer Edition is selected as my default browser. They open fine in both Firefox, Microsoft Edge, and Google Chrome when selected as Windows 11's default browser. When selecting my default browser it would show 2 instances of Firefox Dev but after uninstalling then reinstalling it there is only one instance in the default app list. I'm not really sure where to go from here. Maybe this is an issue with the latest version of Dev Edition or is this an issue with my Windows?

Thanks

I can't open Firefox. When I click on the icon Bing shows up. I downloaded the latest version of Firefox, I can't install it because I get the message that I have to close Firefox because it is running. How can it be? I haven't been able to open it for weeks.

Is there any way to rotate between different screen sizes option using shortcuts keymaps which appear during "responsive design mode" is on. I found extensions which resizes whole browser & they helps. but it also causes developer tool to resize along with browser which hinders me to see different css properties. so i am looking for a way to rotate only screens.

"Responsive Design mode" is what turns on when we press ctrl+shift+m.

I Love using firefox more than Chrome. This is my go to browser.

Noticed yesterday but not as prominent, firefox suddenly steals all window focus, trying to do anything in any other window is pushed into firefox no matter if it is minimised or in another workspace. I have tested this in a clean install along with a clean profile. Bitwarden and other windows seem to act weird when they are interacted with.

This all works well and good on b8 and stable. I am using wayland (Ubuntu 22.* default), but xwayland is available.

Hello. For a couple of months now I can't seem to be able to reproduce some videos on YouTube (depends on their format) and no videos at all on Facebook, for example. I have the same issue on both regular and dev versions. I tried many solutions from the forums but no success so far.

My OS is Linux Ubuntu 20.04. Browser and video drivers all up to date.

a