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I found a UI bug in Firefox for Android on Nothing Phone (1).

Device: Nothing Phone (1) Android version: 15 Firefox version: 150.0.1 (Build #2016157687), 094f3362dcbc efdce34f05b355607cdce06a4ef4 GV: 150.0.1-20260427013024 AS: 150.0.1

Steps to reproduce: 1. Open Firefox on Android. 2. Tap the private browsing icon/tab switcher. 3. Observe the screen layout.

Expected result: The UI should remain stable without moving.

Actual result: The whole interface slightly shifts downward after pressing the private browsing icon.

The issue is visible in the attached screenshots.

Whenever you go from regular tabs to your private ones, or private to regular tabs, the top and bottom margins both grow by about the width of the URL bar. Rotating the phone sideways actually makes it worse, adding bars on the side in addition to the top and bottom ones. The bottom bar will go above the keyboard when you're typing, and so far the only way to get rid of it is restarting the app. It's been affecting me for about a month now; I've attached some examples of how it looks before and after below, and here's some more info about my phone:

Firefox Version: 150.0.1 (Build #2016157687) OS: Android 15 Model: moto g stylus 5G - 2024 Extensions: uBlock Origin

The past few months, I get a periodic issue with Firefox. I've done some searches and looked, but nothing anyone has suggested seems to work. I also run the Chrome browser on this same computer (I have 2 Etsy shops and prefer to stay logged in to both of them, so 2 browsers are a must). NOTE: I've been doing it 'this way' since the early 2010.

This is a new Dell Windows 11 desktop. No issues with the computer. The browser is up to date.

I keep from 3-8 tabs open at a time. My Etsy shop. My email. My shipping supplier. Etc. None of these run a lot of hot graphics or anything. Suddenly, I see 'sparkles (the only way I know to describe it) on some text boxes/etc) then...the address bar starts with the flashing pink/magenta.

Appreciate some help in getting this to stop. Again, doesn't happen on the Chrome browser. Only Firefox. I've used Firefox for a very long time and appreciate it. So I hope that I don't have to go to a different browser.

Thanks in advance. I've attached a photo of what I'm seeing. Note that this vibrates...not static.

Firefox v150.0.1 IOS remove the dense black numbers beside every menu drop-down options - history, bookmarke, tools ETC should be an option to not show the numbers.

Especially bad when there are lots of drop-down menu options - EG in BOOKMARKS

It is not useful. Remove or give an option for users to remove.

I can't include an image of this because the numbers go away when I press any key

Why do you have a leave feedback button in the app but it leads to the question section instead of leaving feedback options. Lastly, why is it so hard to make Firefox display in dark mode across every webpage?

I am somehow getting the new letter rendering on Windows 10, most letters are very pale, 't' is bold , tabs pale , looks horrible. I didn't change anything. So, annoying, difficult to read. Please help.

I want to change my " theme" to "full black" but i cannot get it to switch. I want a black backf=ground but can't change

Any suggestions would be greatly appreciated

So every time when i'm in Firefox I can seem to scroll all the way up. In a way I can it's just that there is this black bar at the top of the screen that is covering the top of where you would see search or anything else at the top of the screen. I've tried deleting history and cache, force quitting, but it doesn't work. Other browsers are fine but Firefox is not with the black bar covering the top of the screen. Is anybody else having this issue?

On Linux Mint 22 on my desktop, the buttons in the RH top corner are tiny. I have measured the minimise line and it is under 2mm long.

I have tried various searches to see if these controls could be made larger, but most questions suggest changing the theme. I don't want to do that, and I'm sceptical that it would make any difference anyway.

Has anyone got any suggestions how they could be made bigger?

I'm using the MATE desktop.

Thank you

Hi Firefox Android team,

I know Firefox supports the Dark Reader extension, and it works. But I shouldn't need an extension for something this fundamental.

My request is simple: add a built-in force dark mode that applies to every single web page automatically — YouTube, Facebook, news sites, blogs, government pages — everything. No extension, no workaround, just one toggle in Settings that makes every website dark.

The problem with Dark Reader: - Pages visibly blink and flash before going dark - It slows down heavy websites noticeably - It's an extra install that most casual users never discover - It shouldn't be the user's job to find a fix for a missing core feature

Firefox for iOS already has a built-in Night Mode button in the menu. Android users deserve the same — and better. Make it automatic, make it system-wide, and make it respect AMOLED screens for true black backgrounds.

Microsoft Edge and Chrome already have experimental force dark mode. Firefox can do it cleaner, faster, and make it a proper setting instead of a hidden flag.

This is a basic comfort feature in 2026. Please make it happen natively.

Thank you.

Best regards, A Firefox Android user

Good morning,

I'm using Firefox on Windows 11 (screen scaling set to 150%).

I'm having a problem with the very small font in the tab bar (bookmarks) at the top of the browser. The tab text is difficult to read, even though other interface elements are enlarged accordingly.

I've tried various solutions:

modifying the userChrome.css file

changing the settings in about (layout.css.devPixelsPerPx)

changing the system scaling

Unfortunately, these changes don't affect the tab text size – only the title bar or other elements change, not the tabs themselves.

Is there an official way to increase the tab font size (this doesn't mean enlarging the pages, but the browser interface)?

Thanks in advance for your help.