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I've been having this strange behaviour in Firefox Nightly on Android, where the "Delete browsing data on Quit" setting, whether it is ticked or not, automatically closes open tabs. This used to not be a thing, and I wish for some clarification if this was supposed to do this from the start or not.

My settings under the "Delete browsing data on quit", which is of course turned on: Ticked: Browsing data, Cached images and files, Downloads Unticked: Open tabs, Cookies and site data, Site permissions

Tabs get closed, otherwise works as on tin.

Device: Poco X3 Pro System Information: RAM: 6 GB + 5 GB extended RAM Kernel Version: 4.14.18 OS Version: MIUI 14 14.0.6

Issue Description: When I switch away from Firefox Mobile and return after even 1 second, the currently opened webpage refreshes every time.

Actual Behavior: Every time I leave Firefox briefly and come back, the webpage reloads.

Additional Notes: The phone is capable of keeping heavier apps in background. I am able to run PUBG Mobile and Call of Duty: Mobile at the same time without background issues, but Firefox still reloads tabs aggressively.

Troubleshooting Already Done: 1. Disabled battery optimization for Firefox 2. Enabled Firefox as locked app in recent apps 3. Disabled phantom process killer 4. Reinstalled Firefox

Moderator note: This question has been edited to specify the OS version based on the question text.

I go to a website and it tells me that it has emailed me a code. I have to go to another app to bring up my email to get the code. When I go back to Firefox using the recent apps feature, on my phone, Firefox reloads to the previous page and I have to start all over again because you've gotten rid of the page I was on, to put the code in. It's an endless cycle. Since I'm not actually closing Firefox why can't it open onto the page I was just on?

I allow all passwords to auto fill on websites but there are 2 I specifically want to store it in ff but want to only do it manually. Is it possible to segregate these 2?

Hello its been a 2 or 3 months I have been using firefox and always have meet multiple malfunction on the browser, its not that I am saying its bad tho I like the GUI design and the features it have. But this recently update i experiences a malfunction that when I try to type a wrong word autocorrecting is kinda multi hopping like its scrabble some words I try to clear cache it and even clear cache my keyboard but still their. Hope mozilla find this bug immediately

Issue: Critical Rendering Failure and Script Latency on Polybuzz.ai I am reporting a consistent issue where modern AI platforms, specifically Polybuzz.ai, fail to function correctly on Firefox (both Android and Linux). Despite being a loyal user since 2004, the current performance gap compared to Chromium browsers is making daily tasks impossible. Core Technical Problems: Layout Corruption: Even in Desktop Mode, the UI breaks, elements overlap, and CSS grids do not render properly. High Input Lag: Massive delays in JavaScript execution, causing the browser to become unresponsive during site interaction. Engine-Level Issues: The problem persists on both Android (latest stable) and Linux (Zorin OS/Linux Mint), suggesting a fundamental issue with the Gecko engine's handling of heavy AI frameworks. Troubleshooting Done: Tested with Enhanced Tracking Protection both ON (Standard) and OFF. Cleared all site data and cache. Verified that the same site runs smoothly on Chromium-based browsers on the same network/device. Please investigate Gecko’s compatibility with these modern web standards. Screenshots of the broken UI are attached for reference.

I'm signed in on both the mobile and desktop app with the same account, sync is on for both of these, but the sync is not actually happening. None of my passwords or history is accessible in the mobile app. It also seems to not save any history at all because I keep having to type in whole web addresses instead of the app filling in the rest itself, even though I've visited these websites many times. There's no error in the settings or anything, it's just not working properly.

Les liens dans les collections sont trop trop sensibles à l'effacement sur mon mobile Samsung A25 5G. Je perd facilement les liens en navigant d'un lien à l'autre.

149.0.2 (Build #2016153095), 9f0b9889e371a1c81cc665cfce6f53803006ad9b GV: 149.0.2-20260403140140 AS: 149.0 OS: Android 12

I've turned all Search SETTINGS to OFF. The Firefox Suggestion show up as soon as ANY characters are entered into the browser's search box.

How to export all opened tabs including non-active in android firefox 149.0.2 ? this capability was available in previous versions but seems now hiddenly deleted. any workaround did not help: couple of extebsion couldn't save all as-considered opened tabs properly - only those actually loaded to ram. https://github.com/nbeaver/save-tabs-firefox-for-android

I have no idea what's causing this, but recently video playback on every website keeps breaking. I have to go into my phone's settings and delete the cache from there, or uninstall and reinstall Firefox completely to fix it. But it only fixes it temporarily. Everything else seems to work fine, but video players just... don't work at all after a while.

When I follow a link from Gmail to an article I want to read, Firefox opens a new browser window in the upper left corner of the screen. I have chosen "full screen" which then goes to full screen and immediately back to the tiny window. I have changed the default to Chrome, uninstalled and reinstalled Firefox, and changed multiple settings with no success. Now I'm looking for ideas. Thanks much for any light you can shed on this issue. Joe