Android 版 Firefox コミュニティフォーラム

Hello Firefox Community,

I'm hoping for some help with a persistent video playback issue on Firefox for Android. I am committed to using Firefox for its privacy and its independent Gecko engine, but this performance bug is a major blocker.

The Problem: When I play videos in Firefox, the playback is very choppy and stutters, appearing as if it's running at a very low frame rate.

Crucial Testing Information:

This issue is specific to certain browsers. I have tested the exact same videos on Chrome, Vivaldi, Brave, and Ulaa, and they all play perfectly smoothly. The stuttering issue happens in Firefox (and also in Opera).

This confirms the problem is with how Firefox is rendering video on my device, not a network or hardware limitation.

Troubleshooting Roadblock:

I have already tried all the basic fixes (clearing cache, reinstalling, etc.).

I attempted to follow standard advice to troubleshoot this by accessing about:config to check the status of hardware video decoding. However, access to about:config is completely disabled in the stable version of Firefox for Android. This prevents any advanced user-side troubleshooting for performance issues like this.

My Device Information:

Phone Model: OnePlus Nord 2T

Android Version: Android 14

Firefox Version: 143.0.4

Given that a critical troubleshooting tool is unavailable, I am reporting this directly. This seems to be a hardware acceleration incompatibility issue with my device.

Any help would be greatly appreciated. Thank you!

When I connect my Bluetooth earbuds to watch a video on Firefox browser it works fine. But when I disconnect my Bluetooth ear buds the video stops playing and cannot be played through the phone anymore.

I refresh the page, choose another video, close the tab, open a new tab and now the video does not even play at all.

I followed the steps at https://support.mozilla.org/en-US/kb/sync-bookmarks-tabs-history-and-passwords-android

When scanning the QR code, my phone is stuck on this: https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2025-10-12-17-54-22-6b261a.png While my desktop shows this: https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2025-10-12-17-55-00-1c9ca2.png

When signing in with email on my phone, I get an "Unexpected error": https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2025-10-12-17-56-18-5c7b93.png

I've tried everything. I've cleared the app's storage and also re-installing the app. I've removed the old device login from "Connected Services" in https://accounts.firefox.com/settings.

I am able to save tabs to collections. However, there is no collections section on my homescreen, despite support articles and questions indicating it should just be there. When I turn shortcuts and stories on, they still do not appear. How do I make collections show up?

The tabs don't regularly sync between the desktop and Android browsers. I can manually hit the "Sync now" button on either end, and the latest tabs open don't change. Specifically I can't sync tabs opened on the Android browser to the Windows desktop browser. Clicking the button on the desktop browser does something, it switches to "Synching" with a loading throbber, but the tabs don't appear below in the list. Doing it on the android browser does nothing, it still reads "Last Synced 12 Hours Ago" on my android browser, and this is generally the number it says, more or less, whenever I attempt this.

I've tried updating the browser on both devices, and force stopping it on the android device and restarting it based on community recommendations, then reattempting to sync, and neither helped.

Other options suggested copying sessionstore.jsonlz4 from the profile folder on one device to the profile folder on the other device to transfer the open tabs (https://support.mozilla.org/en-US/questions/1404630), but the guidance to do that doesn't work on Android, as it lacks the menus referred to in those guides. I don't know how to access the session data on Android, nor could I find a guide for it.

I've previously asked this question but it has been archived without any action.

I have the current Android Firefox installed, my homepage setting has 'recently visited' UNCHECKED, but the homepage is adding all my recently, or possibly 'frequently visited' visited, pages! Swipe sideways to show even more of them. The only thing that should be on my homepage are shortcuts - things that I wanted to pin - since the specifically unticked 'recently visited'.

This is a privacy issue as well as just a bug. Please fix this urgently.

I've also put this on my review on Play store as I consider it something that needs attention...

In the first loading the share menu would only show other firefox devices until a few seconds later other options appear. Closing the menu and reopening would not have this problem so I am unable to check if it's an Android problem

Posted this in Google Play Store reviews and was told to post here:

Frustrated with latest update to the download UI. When you save an image for example, the Download Progress and Download Complete pop-up can be swiped away to hide the pop-up before it naturally fades, but the area of the screen it occupied remains uninteractable for a period of time anyway. If you try to tap anything in that area, or swipe to scroll a page by starting the swipe in that area, nothing will happen. It's as if the pop-up is still there, just not visually. Hoping this gets fixed.

Additionally, it seems awkwardly difficult to swipe away the pop-up as well, requiring almost an entire screen width of swipe to make it properly disappear.

When I open the tab tray and realize that I don't know where the tab I'm looking for is, I would like to be able to type some search terms to find it.

This is when I am searching for a tab that I know is open, so I'm not using the new tab workflow.

Phone: Nothing 3(a) Headphones: Nothing ear (a) When using YouTube (phone speaker) all runs smoothly. But when using earphones videos desync and stutter very badly. My extensions are "ublock origin" and "privacy badger" Any help or suggestions would be welcome

So for some reason both the navigation and status bar always stay visible for me when I try to watching any full screen videos.

Does anyone know why this happens and if there is a solution to it?