Firefox for Android Community Forum

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 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 accidently deleted Firefox. When I reinstalled collections had disappeared. I can add a webpage to collections but no collections on the homepage. I have debug mode and set home screen default to control. Also disabled search bar. I have uninstalled and reinstalled several times. Any ideas?

Recently, for some reason, my Send to Device on mobile doesn't send the tab to Desktop. I'm running the latest Firefox on PC and mobile (Galaxy S25+ latest Android version).

I've tried uninstalling/reinstalling mobile, logging out/reconnecting my Firefox account on PC and rebooting but nothing seems to work. I CAN send from PC to mobile device; just not the other way around. Started maybe a month or so ago without warning.

I am using BIitwarden Passward manager. When i tried to install extension browser I was unsuccessful. Being new user of such apps please guide me to complete installation.

Could you make a shortcut to switch on between "dark mode" and "bright mode" in the mobile app browser + pc desktop browser?

There are enough webpages that don't show correctly in dark mode. It is not convenient to change the dark mode each time in settings!

Thank you