Firefox Community Forum

I have issues discerning where each of my desktop windows are. To help with this I use gtk.css styling to add a border on all of my desktop windows. For some reason, Firefox does not draw this border.

Is there any way to apply a border around the Firefox window?

I was able to get a border around the navigation area of the browser by adding a userChrome.css file but I don't see any way to do the same thing for the whole window.

Can this be done in userChrome.css? Using gtk.css styling? Any other setting or file?

I am running Firefox 155.0.1 on Ubuntu Linux 26.04.1 LTS using the Gnome 50 desktop.

Hello everyone.

Firefox updated today. I don't know—maybe some people like the new design of the tabs, the buttons in the drop-down menus, and the gradient borders around the active tab and the tab bar itself. But I’d like to revert to the old interface. How can I do that?

Thanks!

I've been using Firefox for a couple months now, and I just ran into this problem today with English text nearby Japanese text: https://files.catbox.moe/diw4y3.png

• It's not affecting Japanese text
• It's not exclusive to Japanese websites (it's present in one email in gmail, but not all of them)
• I haven't seen it on any Japanese websites
• It's also present in some add-ons that generate text (Checker Plus for Gmail, Yomichan)
• Turning off all add-ons doesn't fix it, but opening the page in a private window does fix it

Firefox 155.0.1 (64-bit), Windows 11 Pro

I am on version 155 of the browser, and the sidebar is not showing up for me. Clicking the sidebar toggle button also does nothing. I've tried going into settings and toggling the show sidebar option, but that also doesn't do anything, as if the sidebar feature doesn't exist. Toggling vertical tabs just makes the tab bar disappear, and I've tried both the options menu and right-clicking the side bar toggle button. Is there an error, or am I missing something?

I noticed that my Tab background color doesn't change after recent Firefox updates.

I have this code (css - chrome) to change the color of the active tab to green and it no longer working.

/* Start code: Change color of active tab to Green and the inactive to default*/ tab[selected="true"] *{ background-color: #00c100 !important; /*Green */ font-size:10pt !important; font-weight: 650 !important; color: black !important; }

Any help in fixing this is appreciated. Regards,

this old man cannot find the home button? I thought i had looked everywhere i could imagine but it must be right where i couldn`t imagine, I would certainly appreciate some help. Thank you for your time and effort.

Hello! My Firefox browser is currently in a state where all fonts/letters in the Firefox interface (bookmark bar, settings, about page, website name...) are replaced by undecipherable characters.

I've searched for similar problems already and tried so far the following steps to resolve, unsuccesfully...

• Opening the browser in Safe Mode / Deactivating all extensions
• Uninstalling and reinstalling Firefox

• Disabling hardware acceleration
• Trying on another profile




When I copy paste said text to another window (ex: Notepad, Chrome Browser…) it appears properly. And as you can see in the screenshots below the text in actual websites is readable -- only the browser's interface, setting, address bar... are scrambled.

Does that bug rings any bell? Do you have any other troubleshooting steps I should try to resolve this? Any help will be appreciated! : )

This shield on the search bar is making firefox on win11 unusable for me. I set browser.urlbar.trustPanel.featureGate = false but it still displays. Why do they keep making these changes, it seems like every month there is a new change requiring setting changes,

On updating to firefox 155 in widows 10, I lost my left side bar on start up with just blank page and search engine box, with firefox application menu n top right of screen. I would like my Bookmarks menu on left sideof screen with menu drop-down folders containing site tabs contained in left side bar as previously obtained. Can anyone help with this frustration Many thanks, Dickie

When Firefox is running in a non-maximized window, an unwanted empty space appears on the left side of the tab bar, before the first tab.

This space is not present when the Firefox window is maximized. It appears automatically whenever the window is restored to a smaller/non-maximized size.

The issue affects the tab bar layout and leaves a noticeable unused area on the left side of the tabs. I would like to know whether this is expected behavior or a UI bug.

Firefox version: 155.0 64-bit Operating system: WINDOWS 11 25H2 64-bit

I have switched off the "story" but want to get rid of the overlay for this. How can I do this. It is visually offensive to have this big gray blob in the middle of my screen. I have been loyal for firefox because I do not want this kind of intrusion.

Now when I click on something in Firefox, for example a Facebook post, it opens in full-screen mode, not just in the selected window size. When the new window opens in full screen, it covers other stuff already on the desktop. It's f'ing annoying. How do I choose to have new windows open at the existing window size?

I have two installations of Firefox on a desktop and a laptop. The first installation is pinned to the Windows toolbar and the 2nd installation has a shortcut pinned to Windows Start.

When I saw that the latest update of Firefox to 154 allowed changing icons, I changed the 2nd installation to a different Firefox icon (mini-fox with black background) so it was easy to see which installation to use when both were open.

The problem is the changed icon for the shortcut is wrong after shutting down the computers. I do not recall having this problem with the 1st installation or on my 2nd laptop where I only have one installation of Firefox.

I suspect this is just a glitch that will likely be fixed in a future update, but it is annoying to have to go through the process of changing the icon every time I startup a computer. If anyone has found a solution for this, I would very much appreciate your help.

For some scrollables, v153 doesn't respect the Mac OS setting to hide scrollbars unless scrolling on page load. If that OS setting is adjusted after the page is loaded, then the page respects it again until refresh, so there's apparently some sort of race condition going on where it's not reading the setting in time before the page loads?

This is not a problem in v152. I downgraded back to v152 and it's working again.