Firefox Community Forum

After the update on the 14th, dark mode has gained weird stylistic choices that I cannot find a way to alter: namely, when closing a new tab, a white box with black font appears -as opposed to the previous darker toned grey/purple with white font. However as of writing this post, I notice that dark mode is not working on this webpage. Seeing as I have an extension enabled in addition to the basic dark mode selection in Firefox settings, I can only imagine that something was broken in the update. Please advise, the change is jarring.

After upgrading my Firefox to version 145, a blue line appears at the top of the browser window when it's in full-screen mode and the current window is focused. I know this is to remind the browser window that it's currently focused and interactive, but I really hate this notification and want to make this conspicuous blue line at the top of the window disappear. I couldn't find a relevant option in the Firefox browser settings. Does anyone know how to set this up?

Please help me to disable this focus tip,thanks!

recently Firefox has started leaving a small gap at the top of the window with the desktop background (the light blue in the screenshot) is visible when the window is maximized.

This issue doesn't occur with any other program and occurs in troubleshoot mode.

Hello. The last few days iv noticed that if i have firefox on my second monitor maximized, i have a thick white line at the top now, yet iv never had this before in all the years iv used firefox

Is anyone else getting this?

The update to v145 completely changed how background color and highlighting of HTML emails are displayed. It was nicer before. Can someone please share which setting in about:config to change to return to HTML display in previous versions?

Thanks!

Hello! I am running firefox and had an issue with the URL bar. Before, the URL bar was at the top and right underneath it would appear the open tabs; underneath that were my bookmarks. I don't know what I pressed, but now, the tabs and bookmarks are on top (on the same line), and the URL bar is underneath that -- see screenshot for details. It is a small issue, but it is driving me crazy, since all my mucle memory on where to click etc. is gone. Furthermore, the bookmarks now crowd the open tabs, so if I have a lot of open tabs, I cannot see them all at a glance.

I tried looking for settings, but all settings for customizing the toolbar are about adding items to the URL bar, not switching the position of URL bar and the open tabs. How do I fix this?

Fedora 42 x86_64, firefox 145.0

Using FontForge, I created a custom Unicode (NO 8-bit pi encoded) version of the Symbol typeface with a new font-family name.

One of the customizations, the serif versions of the "Registered Sign", "Copyright Sign", and "Trademark Sign" are available by the official Unicode codepoint. The sans-serif versions are available by the official Unicode codepoint *directly* followed by U+200B (Zero Width Space - ZWSP).

This is done with the OpenType contextual alternative feature (calt).

It works in the FontForge metrics test window and it works in Chromium and derivatives but it does not work in FireFox - either the Fedora 42 build or the generic x86_64 build from Mozilla.

I tried the CSS setting:

body { font-feature-settings: "calt" on; }

No dice. I believe that's the right CSS setting because if I change the "on" to "off" then it no longer works in chromium and derivatives, so that does seem to the be the CSS setting that controls whether or not the feature is enabled.

All my searches on the web seem to indicate the FireFox supports calt however all the examples I see are related to swashes which are enabled/disabled by a different CSS setting.

I did see some indication that some apps only allow calt for certain language scripts, typically Arabic and/or Greek and/or Latin and perhaps these legal glyphs aren't considered one of those scripts?

Does anyone know why the calt works elsewhere and not in FireFox? Yes, I tried without any extensions or plugins enabled.

When I open Firefox, since last upgrade 13-november-2025(version 145.0) it's always in full screen ! I hate this configuration and I want to come back to the previous "normal" starting configuration. Everytime I open Firefox I must do "F11" now. How can I do ?

I do not like the blue background behind My sidebar bookmarks . Is there a way to disable/remove the blue background when using bookmarks sidebar? I am not familiar of how to use syntax editing (I guess its called that), I just need layman terms if possible.

So within the last couple of days Firefox has started toggling the menu bar even though I have it disabled/hidden. If I were to click off of the browser to check Discord for example, it pops up when I click back on and literally moves stuff down--which makes it annoying if I try to click back on to enter a web address.

Anyone else having this problem?

Every time I go to use programs on my computer while on a Firefox session, when I return to Firefox, the menu that appears when I'd typically press the Alt key drops down. Every time. The only way I can get it to stop is by exiting out of the session entirely and reopening it. There is no option on my Firefox settings that can help me disable the action.

I have not installed or changed anything in my settings, it began happening suddenly, and has become an interruption in my workflow. Any ideas on what might have caused or what I can do to fix it?

I see in one of the past recent updates, I notice that "- Original Profile" is in the windows and not just the title of the website I'm on. Any way to remove it? It looks off and not necessary to me.

When i right click on something in my browser the menu shows up but none of the options have text. For example i can still open a link in a new tab but there's no text for the option i just have to know witch is witch. This is exclusively an issue with the browser, right clicking on my desktop or on another application produces all the expected menu option with no error.