Firefox for Android Community Forum

Hello,

Not sure if there is a new bug open for this issue, but colors have been off for awhile now on Tab row on top for Firefox Android. I noticed on the new Nightly, the colors are changing for address bar and the tab row section.

Unfortunately colors are still off. Not sure if I should open a new bug for this?

I am using Pixel Tablet. I have same issue on multiple other android tablets too. (OnePlus Go). The only one without an issue is Samsung tablet I have.

Image attached of how it looks on the new Nightly.

I have a bug filed about this from quite awhile but that was for stable android. https://bugzilla.mozilla.org/show_bug.cgi?id=1971473

I'm not sure if there is a new section to follow along with the new work being done? Colors are still off.

How to change the font of web text in the Firefox browser on Android for the Asia-Pacific region, for example, how to choose different fonts for Chinese fonts? Can the Android version of Firefox have a built-in setting that allows the system font to be used directly as the default font for web content or the interface?

我使用了mfga的root模块（https://github.com/Numbersf/MakeFontsGreatAgain），但是网页并不是正常显示英文字体而是花体。

When I use the expanded custom for the tab. It makes it to where the screen has this annoying border where it blocks some links and other stuff. Is there a fix that isn't just me switching to the regular one?

I am using Firefox for Android to run YouTube as a Progressive Web App (PWA). As shown in the attached screenshot 1000011880.jpg, there is a persistent red banner at the bottom of the screen displaying "YouTube" and "m.youtube.com". This banner takes up valuable screen real estate, distracts from the content, and ruins the "app-like" experience that PWAs are designed to provide. Request: Is there a setting to disable or auto-hide this bottom security/identity bar? If not, please consider this a formal request/bug report to allow users to hide this UI element once the site identity has been verified, similar to how other mobile browsers handle PWA manifests. I have also attached 1000011881.jpg to show the context of this support request.

Ever since I updated my Firefox for Android app to the latest version there have been these odd grey bars at the top and bottom of the app. It's as if the browser is assuming my phone is shorter than it actually is and is leaving these huge margins (I've attached an image to show what I mean). Firefox is the only app that has had this issue and it persists on every single page. It's even worse if I rotate to landscape as it makes about a third of the screen this grey void. In case it helps solve this issue my phone is a 2024 moto g power 5G.

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

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?

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

Device: Xiaomi K80 Pro Firefox Version: 150 and 150.0.1 (both affected)

Steps to Reproduce: 1. Open Firefox on Xiaomi K80 Pro 2. Enter Private Browsing mode 3. Observe the top toolbar/tab bar

Actual Result: The top tab bar shifts downward (drops) when entering Private Browsing. The issue persists even after returning to normal browsing mode.

Expected Result: The toolbar should remain in its normal position without any visual displacement.

Workaround: Restarting Firefox temporarily restores the toolbar to its correct position.

Additional Notes: Issue is consistently reproducible across both versions 150 and 150.0.1.