Firefox Community Forum

If letterboxing (anti-fingerprinting) is used or when a webpage is smaller than the window (such as in about:config), Firefox fills in the rest of the window using a dark gray. I want to make it completely black.

This is what I currently have in my userContent.css

```CSS @-moz-document url-prefix("about"), url-prefix("chrome"){

 body{ background-color: rgb(0 0 0) !important };
 .sticky-container{ background-color: rgb(0 0 0) !important };
 #toolbar{ background-color: rgb(0 0 0) !important };

}@-moz-document url-prefix("about"), url-prefix("chrome"){

 body{ background-color: rgb(0 0 0) !important };
 .sticky-container{ background-color: rgb(0 0 0) !important };
 #toolbar{ background-color: rgb(0 0 0) !important };

} ```

Have been using Firefox 133.03 on Mint 22 Cinnamon for a couple of weeks now, but I have a number of randomly missing favicons in my bookmark toolbar. I have extensively googled the issue and tried pretty much all the remedies I could find: just click on the place holder icon to refresh, delete the bookmark and place it again, use the Checkmark extension, check the integrity of the favicon DB, delete the favicon and places.sqlite files, clear the cache. Doing these things repeatedly and repeatedly restarting Firefox, I could claw back a number of my icons, but now things have stalled and there a quite a few holdouts that refuse to update. I'm also using Firefox on Windows without these issues. Would appreciate some hints as to how to further troubleshoot this.

Hi,

I have a dual monitor setup and quite often and randomly, when I launch the browser it opens on the secondary monitor instead of the primary, which is the one I always use. Firefox is up to date: 135.0 (64-bit)

I've read somewhere that I have to move the browser to the primary monitor, resize it so that it is not fully expanded and close. After opening it again it opens on the primary screen and I can maximize it and close again, but when I open the browser again the next day it may open on the secondary screen again... or not, just a very random thing. Any clue?

Thanks, Pere

I wish to undo the changes to the sidebar introduced with release 136. I want a sidebar for bookmarks, but the Bookmark Sidebar per se, not the multi-functional Sidebar that has replaced it. The new version takes up unnecessary screen space even when I only select bookmarks. I have Firefox installed with Windows 11.

Das u.a. Bildschirmfoto zeigt die Buttons der Startseite. Einige davon sind verschwunden. Das leere Button mit dem +, mit dem man neue Buttons einfügen konnte, ist ebenfalls nicht mehr vorhanden. Wie komme ich wieder dahin, weitere Buttons einzufügen?

‘Bookmark Toolbar Folders: How can I make the drop-down folder background black (without a dark theme) and the text white like you use to have in earlier Firefox versions. My version is 133.0.3’ for ‘Firefox’

Thanks

hi i got used to a small search window in lower left of FF....is gone!. i thought it was an add on but can find no trace of it so was it a ff feature?

it would simply locate a word of my choosing on the open ff page, thats all

would much appreciate any help, thanks

Whenever I start Firefox, with normally not more than a couple of tabs, do some work, then drink coffee, screensaver activates, and when I return, the window of Firefox is suddenly (after the last update 133.0.3) is a very small one, left top corner of the screen. I read in the update descriptions, that this problem was supposed to be resolved in version 133.0.3, but present in version 133.0.0. Seems like for me that didn't work, I got it installed when updating. I went looking for others with similar issues, found a couple with tab problems, and also sometimes it's not a Firefox problem, but more a screensaver issue.

Some technical details: Windows 11 Pro (24H2, updated 1/1/2025, 26100.2605)

I have recently got a new work laptop and have imported my bookmarks and passwords. However, I am unable to get the bookmarks toolbar to show up? The usual way of enabling it to always show or only show on new tabs doesn't work and I have a message on the toolbar that says "For quick access, place your bookmarks here on the bookmarks toolbar. Manage Bookmarks..." But nothing works. Please can you assist as it is driving me nuts.

Hi everyone!

Since last update (136?) when I open a page with a video in a new tab, the width of this tab is very small! Almost half my current tab.

(I don't have another example but does this have anything to do with any "media" on a page?)

I have the width set to 152 for years...

When I play a video, the current tab is reduced. Pause= normal tab. Play= small tab. Pause= normal tab...

"browser.tabs.tabMinWidth should have been adhered to."

I just completely reinstalled Firefox: still the same.

What can I do, please?

Today the icons on New Tab have been resized which makes it difficult to see the differences. As seen in the attached images the logo icons have been reduced in size but the generic letter icons have had their outside edges overlain with the border. Not only has the visible area of the thumbnail been reduced but the title for each of the icons has also been truncated. Another thing to note is there is also more vertical space between the icons.

When I looked into this further I found information about the about:config page. As per https://support.mozilla.org/en-US/questions/1338808 I found and edited the browser.newtabpage.activity-stream.newNewtabExperience.enabled key to false. This did not change the icon size.

I also noticed the next key browser.newtabpage.activity-stream.newNewtabLayouts.variant-b So I changed it from true to false. This seemed to work... Hooray!!!

Unfortunately after I closed and reopened firefox the small icons were back.

Please help, the shortcut icons are only helpful if they are readable and identifiable.

Latest update reduced the size of tiles on my new tab page. they're too small now to read the letter or custom image. And only a few letters of the name of the site below the tile are visible. Not enough to know what the tile is for.

How do I return them to their normal size?

Hello,

Suddenly some UI elements became color-inverted or almost completely black, such as the tab icons in the tab bar, the website icons on the New Tab page and some icons in the settings menu. Also, some websites appear to have this issue, but the Samsung website is the only one I found so far with this issue.

On the same day it happened I switched to an OLED HDR-capable monitor, so I assumed it would be related to HDR, but I played around with some settings and I'm not sure anymore.

What I tried: - hardware acceleration on and off - HDR completely on and off - default light theme and dark theme, no customs themes installed - all extensions disabled (I have no extensions that would influence graphics or colors anyways) - latest update already installed - nothing else changed in the Nvidia control panel as far as I remember

None of the above helped. Any advice on this is appreciated. Attaching some pictures with the issue. Using Windows 11.

Thank you!

How do I make the scroll bar always visible? The fact that you have to hover over it before it shows itself is maddening! Makes scrolling so much more difficult and frustrating. If this can't be adjusted I am done with mozilla after many many years of using it.