Firefox Community Forum

Bugzilla Report Package

Product: Developer Tools

Component: General / Debugger

Title: [Source Map Loader] Worker crash due to unhandled JSON.parse error on non-JSON/HTML responses in fetchSourceMap.js

Description:

When fetching source maps in a worker context, fetchSourceMap.js occasionally encounters an unexpected non-JSON response (such as an HTML error page or 404 response starting with ). This causes an unhandled JSON.parse exception at line 83 (_fetch), crashing the source map consumer.

Stack Trace: Plaintext

Source map error: Error: JSON.parse: unexpected character at line 1 column 1 of the JSON data Stack in the worker: parseSourceMapInput@resource://devtools/client/shared/vendor/source-map/lib/util.js:163:15 _factory@resource://devtools/client/shared/vendor/source-map/lib/source-map-consumer.js:1069:22 SourceMapConsumer@resource://devtools/client/shared/vendor/source-map/lib/source-map-consumer.js:26:12 _fetch@resource://devtools/client/shared/source-map-loader/utils/fetchSourceMap.js:83:19

Proposed Patch (fetchSourceMap.js - Line 83): JavaScript

// Replace direct unhandled parse at line 83 with safe parsing: const sourceMap = (() => {

 try {
   const trimmed = responseText ? responseText.trim() : "";
   if (trimmed.startsWith("<") || trimmed.startsWith("
})();

Ever since the latest update i've noticed my firefox browser after using it for a while starts eating up all the ram until my computer freezes and needs to restart, i've heard this issue happen to others too but i am wondering if there are any ways to prevent it or will there be any updates to fix it?

I use my firefox on bazzite and have nothing else running in the background, after a while i watch the stats in my task manager and i see firefox using over 10GB of ram and climbing and have to shut it down before it freezes my pc

(can't show any screenshots because if i do then my pc would probably crash when trying to SS it while it has its problem)

I get this dozens of times in a session. As far as I can tell it doesn't affect performance. I found a solution about using notification-daemon for Ubuntu from 4 years ago that doesn't apply to Slackware. I like to eliminate error reports. I don't even know what this means. Knowing would be great, even if I can't stop it. Just eliminating the error report, if it's harmless, would be nice.

Buenas. Me es imposible arrancar Firefox 155 en Debian 13. Cada vez que lo intento, un mensaje me dice: "Your Firefox profile cannot be loaded. It may be missing or inaccessible". En efecto, estuve tocando la configuración de perfiles para migrarlos desde una copia de seguridad y algo debí de hacer mal por despiste. Para aligerar, desinstalé completamente el programa con remove --purge / clean / autoclean / autoremove y lo volví a instalar de nuevo, pero el problema persiste. Es como si quedara algún rastro de la antigua instalación. Desinstalado de nuevo, intenté buscar la carpeta oculta de Mozilla Firefox, que eliminé; pero al instalar de nuevo el navegador, el problema persistía. ¿Qué sucede? ¿Alguien me puede echar un cable? Gracias y saludos.

I've made a related feature request to include an option to force Firefox to give the option to autofill any arbitrary field as a credit card, address, whatever. This is because 9 times out of 10, Firefox either fails to recognize a field and doesn't offer an autofill option, or something else is going on. If I was able to right click on an empty field and select, "Fill from credit cards," this would solve my problem.

I inspected some of these elements and see that they seem to contain the correct type of markup, with the proper autocomplete="cc-number" attribute. So why is Firefox not recognizing that field? Why is it not popping up an option to autofill?

tl;dr: there is no option to autofill even on correctly marked-up forms. Nothing pops up. My credit cards are stored correctly, I'm logged in as the correct user, the feature works on *some* checkout forms, just not most of them.

edit: I don't know how to delete this. turns out this is a known bug on firefox on linux. Firefox cannot actually save payment info, but doesn't serve an error to the user. however in the console it will throw a NS_ERROR_ABORT error: "User canceled OS unlock entry" error when it tries to save. the one solution i looked at seemed way too complicated for me so i am simply going to give up and try to keep my cc closer to me and not get frustrated when it doesn't work.

I get 'you browser cannot play this video" when I try to watch NFL Sunday Ticket on Youtube; what causes this? I use Linux Mint on my laptop.

I also have Opera browser installed; I get the same error using Opera.

Please help. Thanks.

I see this in abrt:

--- Running report_uReport --- Server responded with an error: 'Element 'desktop' is invalid: String '/usr/share/wayland-sessions/plasma.desktop' does not match the pattern '^[a-zA-Z0-9_/-]+$

--- Skipping collect_GConf --- No matching actions found for this event.

--- Skipping collect_vimrc_system --- No matching actions found for this event.

--- Skipping collect_vimrc_user --- No matching actions found for this event.

--- Running collect_xsession_errors --- No /home/j/.cache/gdm/session.log

--- Running analyze_CCpp --- Generating backtrace Backtrace is too big (295534 bytes), reducing depth to 512 Backtrace is too big (283210 bytes), reducing depth to 256 Backtrace is too big (283210 bytes), reducing depth to 128 Backtrace is too big (283210 bytes), reducing depth to 64 Backtrace is generated and saved, 23162 bytes

--- Running analyze_BodhiUpdates --- Looking for similar problems in bugzilla abrt-action-find-bodhi-update [WARNING] Duplicate Bugzilla bug '#1207138' was found Searching for updates No updates for this package found

Is this normal behavior for Firerfox 155.0 on Fedora 44 KDE-Plasma 6.7?

I have reproduced a persistent Firefox/Linux emoji rendering issue in ChatGPT and found a small CSS workaround that fixes it.

Environment

Linux Firefox 155.0.1 The problem also reproduces in a completely fresh Firefox profile Noto Color Emoji is installed

Symptoms

In normal ChatGPT conversation text, some common emoji such as:

😄 😂 😀 😁 🙂 😊 🤣 ✅

render as monochrome or outline glyphs.

Other emoji such as:

🚀 🔥 ❤

may render correctly in the same message.

A particularly useful clue is that the same affected emoji render correctly inside ChatGPT code/copy boxes, while failing in ordinary response body text.

Firefox DevTools Fonts inspection showed ordinary fallback fonts including DejaVu Sans, FreeSans and Nimbus Sans being used alongside Noto Color Emoji.

Updating Firefox from 155.0 to 155.0.1 did not fix it, and neither did creating a completely fresh Firefox profile.

Diagnostic test

Running this in Firefox DevTools Console on chatgpt.com immediately fixes the affected emoji throughout the page:

document.documentElement.style.setProperty(

 "font-variant-emoji",
 "emoji",
 "important"

)

Permanent workaround

Using the Stylus extension, scoped only to chatgpt.com:

html {

   font-variant-emoji: emoji !important;

}

This survives a complete Firefox restart.

This appears to be a font/emoji-presentation interaction where some emoji-capable Unicode characters are being satisfied by ordinary monochrome text fonts before the colour emoji font is selected.

Mozilla Bug 1971053 describes closely related glyph-selection behaviour and mentions font-variant-emoji: emoji as a remedy: https://bugzilla.mozilla.org/show_bug.cgi?id=1971053

I am posting this both in case it helps other Linux/Firefox users and to ask whether this remaining behaviour on Firefox 155.0.1 is expected or should be tracked as a current Firefox/web-compatibility issue.

I recently made a backup (via the option under Account and sync in the settings), as I was switching to a new OS. Unfortunately, when selecting the backup in the new OS, I am greeted with the error message:

This file isn’t working. Try picking a different file.

According to this, my file is corrupted. Is there anything I can do to fix this, or have I just lost all my data? I no longer have access to the profile files in the original OS.

Recent update nuked all my custom containers, and closed every page that was currently open within those containers (pretty devastating bug).

Now, I go to add sites to the new custom containers I made to replace the earlier ones. When I go Manage Containers > pick a custom container > "manage site list ..." and there is no list. Just a blank window.

I would like to make Firefox web browser to save automatically the "tab group" created.

The feature is already there by left clicking on the group and choose "save and close group". I would this to be automated as default behaviour at every attempt to close the last tab of the group, so the "tab group" never gets deleted by itself. Only deliberately left click on the tab group and choose "Delete group".

Thank you in advance for your time reading this. 🙇

Firefox security features warning on Linux doesn't explain what kind of file to add to apparmor.d/firefox-local. Is it a .txt file, or something else?