Firefox Support Forum

I use the Windows registry FontSubstitutes (Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\FontSubstitutes) to replace system fonts like Segoe UI with other fonts. It takes a lot of work to get Windows itself to respect these options, to the extent that I have to make it believe Segoe UI isn't present by modifying a different registry location (Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Fonts).

However, Firefox does not respect the FontSubstitutes settings. Based on a previous post here, this is something it did prior to Firefox 89, but has stopped doing.

An ideal solution would be a way for Firefox to correctly read my FontSubstitutes settings. An acceptable workaround would be a way to provide Segoe UI for Firefox to use while still preventing its use in other applications. (I know that, for instance, Adobe Photoshop allows users to install fonts to Photoshop itself, bypassing the system fonts folder entirely.)

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.

I upgraded Firefox to 109.0 on OpenSUSE Linux today as an update. Firefox no longer plays videos. Chrome is still playing the videos, so the codecs are on my machine. Is there anything I can do to fix this?

Firefox always uses excessive GPU memory when I watch video and livestream. about:memory shows that the explict GPU memory allocation is only about 200 MB but in the task manager the GPU memory usage is 1GB, and the latter doesn't decrease even if I close the tab. I suspect that this is a memory leak. I searched for Bugzilla and found a similar issue that has been existing for years: https://bugzilla.mozilla.org/show_bug.cgi?id=1386177

Hi. I bought new pc, and i'm trying to set up mozilla with all my passwords and bookmarks, from old pc. But after i logged in, bookmarks and passwords dont appear in a browser. I had so much important stuff there that im now kinda scared. Thanks for any help in advance

I have many bookmark folders with many items in each folder. Some folders have many,many items in those individual folders. To scroll down the many items I have in a folder takes time. Is there any shortcut I can use to get to the end of the list in a folder without scrolling down for five minutes to get to the end of a list? I have looked in the Firefox website but I have not seen this question. I have many folders that have a lot of items I have bookmarked. Thanks for any help you can give.

FF 109 added a new addons-button (jigsaw puzzle icon) in the addons-toolbar. Can we hide it with a specific variable in about:config, or by creating a specific variable there?

Hi there

since the latest update (17/1/23) Firefox seems to Hang then lockup then freeze then unfreeze when just browsing.

no special tabs open such as Youtube- just locks up on browsing 2 tabs plus- google search on 1 and facebook on 1 tab-closed the google search tab then scrolling through Facebook,froze after 3 scrolls of the wheel,locked up then unfroze

This issue needs to be corrected as it is causing problems.

As you will see from the attached acreenshots, when a file wants to be downloaded, I get the expected Ask options and even though I selected Open with Adobe it still downloads the file.

Picture 1 shows the options, picture 2 shows the file open in Adobe, picture 3 shows it downloaded to my PC and picture 4 shows that I selected Always ask you where to save files so why is the file still downloading.

It creates a nuisance as I only want to open most files and if I decide to save them, I can do that so why is Firefox still saving files whether I want to or not !?!

Now I have to go to the file, delete it and empty the recycle bin for security reasons so this issue needs to be resolved as it used to work fine in previous version of Firefox.

Maybe there is a setting that I need to change so any suggestions on how to fix this would be appreciated.

I am currently running Firefox 109.0 (64-bit) on Windows 10, Version 22H2 (OS Build 19045.2486).

Thanks.

I am trying to block out the new little "stick marks" that post while I try to log on to a site that that I need to "google" and log on to. I tried to sign out of all the "outside sites" that want to log on, but there are sites that I need to log on to and have done this in the past. I usually go to these sites because they are important to my transacting business, accessing my bank, places I pay my bills, etc. If I want to get to these and order or pay a bill, I have to unblock each one of them??? How do I do that? If a credit company wants to contact me, they cannot do this even if we have contacted each other previously? Really?

How do I undo this already-marked system and get out of it? As you can guess, I am old and not up with the times. Please simplify your answers so a not-technical person can understand it.

I installed TotalAV webshield & now firefox won't open full screen. I disable webshield, Firefox opens full screen. BUT I use webshield on chrome with NO ISSUES. I contacted TotalAV, and they said the issue is with Firefox. So...why is Firefox having an issue opening fullscreen when I enable webshield?

hi, i see a new addon in my bookmarks bar- extensions , on the right above... its not possible to drag it down to customize toolbar .i can drag /up and down/other itmes buy why not this one? pls fix it...

I found a really unusual behavior.

If I close Firefox using the "x" at the top right of the window, the Windows default for close, it does not restore session no matter what I do. I can manually go to the settings, history, recently closed windows, and restore them from there, of course - but that is a definitive hassle.

Strangely, even if I open up a new tab less than 2 seconds before I hit the X to close, it will not restore the session but does indeed save the new tab to the previous.jsonlz4 file, and makes that available via going through the settings menu.

What is oddly more unusual is that if I close Firefox by way of ctrl-shift-q, it works fine (opening Firefox after ctrl-shift-q restores the session without any extra intervention required).

How do I make Firefox recognize closing via the bog-standard-since-windows-3.11-for-workgroups X in the top right of the window as properly closing/quitting?

so, my computer is getting old, and because of that, it's slowing then. Firefox isn't helping much because it uses too many processes and memory. i tried deleting some extensions, I tried using task manager to close separate processes but i always end closing the wrong one and closing firefox completely i tried going to dom.ipc.processCount and change the count to 1. I'm so confused, it's slowing down my games i play.

My extensions take up a lot of space in my toolbar and I'd love to hide all of them. However - every 'solution' to the problem tells me to right click the extension straight from the toolbar and click 'Hide from Toolbar'.

I do remember this option existing, however I couldn't find it since last update and I'm assuming it was removed. Is there any way to use it again?

^ (Small note, It would also be lovely if I could add them to the Extensions add-on in the toolbar, as that would really be a better use for it other than overflow)

Hi @all,

I reinstalled my computer from scratch with Windows 11, before this reinstallation I had Windows 10. Now I noticed that with the newest Firefox version 109 (that I also had before with Windows 10) and Windows 11 my multirow bookmarks toolbar doesn´t work anymore. Before the reinstallation it worked with the following code:

/* Source file https://github.com/MrOtherGuy/firefox-csshacks/tree/master/chrome/multi-row_bookmarks.css made available under Mozilla Public License v. 2.0
See the above repository for updates as well as full license text. */

/* Makes bookmarks toolbar span multiple rows */

#PersonalToolbar{
  --multirow-bmb-n-rows: 3; /* Control how many rows are shown before scrolling */
  --multirow-bmb-row-margin: 2px; /* Control how much spacing is between rows */
  max-height: none !important;
}

#PlacesToolbar > hbox{ 
  display: block;
  width: 100vw;
}

#PlacesToolbarItems{
  display: flex;
  flex-wrap: wrap;
  /* --uc-bm-padding is defined in autohide_bookmarks_toolbar.css */
  max-height: calc(var(--multirow-bmb-n-rows) * (5px + 1em + (2 * (var(--multirow-bmb-row-margin) + var(--uc-bm-padding,2px))))) !important;
  overflow-y:auto;
  scrollbar-color: var(--lwt-accent-color) var(--toolbar-bgcolor) ;
  scrollbar-width: thin;
}

/* Hide the all-bookmarks button */
#PlacesChevron{ display: none }

/* Add some spacing between rows */
#PlacesToolbarItems > .bookmark-item{ margin: var(--multirow-bmb-row-margin) 3px !important;  }

I already tried some other codes that I found in the internet but none of them worked. I have this code in the file userChrome.css, this file is in a chrome folder and this folder is in my profile folder. Can anybody tell me what I have to do to make the multirow bookmarks toolbar working again?

Best regards heusmich

I asked this a couple of years ago - ! But the problem apparently is BAAAAACCCKKKK.....

In my list of bookmarks I have inserted SEPARATOR lines. I cannot find how to delete a separator line. There doesn't seem to be any up to date information online about how to handle this - can someone help?

In the previous fix I would click the three-line icon at top right and to into MANAGING BOOKMARKS, where there was a way to see the list, and I could click on and delete any separator lines I wanted to remove.

Apparently in the newest version of FF this no longer works. Now when I go to Manage Bookmarks, there is a list of my bookmarks, but I don't see any of the separator lines.

I'd be truly grateful for help - thank you in advance.