Firefox 社群討論區

I have resurrected a PPC ( 32bit) Mac G5 to Ubuntu 14.04, the installed foxfire version is 28.0, canonical 1.0.

I can not access the internet, as expected, due to an unsure connection.  

Is there a way for me to upgrade foxfire? Can I fix the secure connection issue and use still https? Is there a dependence that is needed? What do you suggest? thxs Mart

Hello everyone.

Firefox updated today. I don't know—maybe some people like the new design of the tabs, the buttons in the drop-down menus, and the gradient borders around the active tab and the tab bar itself. But I’d like to revert to the old interface. How can I do that?

Thanks!

I've never had Secure Connection Failed warnings before, but now I am getting them often. I don't want to stop using Firefox, but it seems I can get to these sites via other browsers.

Recently I cannot use Paypal to process any online payment on Firefox without the browser crashing.

OS: Windows 11 25H2 Reproduction steps: a vendor would have a Paypal button. I would click on it and Firefox would open a pop-up window briefly before crashing.

The pop-up window is normal behaviour for how Paypal processing has worked on Firefox in the past. I have tried turning off potential content blockers: 3rd-party userscripts loading through ViolentMonkey, content blockers via AdNaseaum, and Enhanced Tracking Protection to no effect.

Hi. I have noticed over the last few weeks, so maybe related to the 155.

If I am on a website with links the browser doesn't respond to many links, in fact no links most of the time.

This only happens usually after the first link has worked. There is no data in the status bar for the link.

If I close the link I have opened, always in a new tab, then other links will then work.

It is as it the details of the URL path are not being recognised, almost like something is saying : Hey you are already looking at this site don't be greedy and expect me to open multiple page with the same domain.

I did see a similar query a while ago but can't find it.

So not a critical problem.

Oh yes. When this happens I also cannot right-click to open in a new tab as an alternative.

Thanks

Hope everyone is having at least a half decent day. :)

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("
})();

Steps to reproduce:

• View a PDF within Firefox
• Select the 'Save' icon
• Click within the file name field, right next to "Save As"
• The "forward delete" key ('Delete' on a Windows keyboard) does not work. It used to work in previous versions of Firefox, but no longer works.
• The "backwards delete" key ('Backspace' on a Windows keyboard) works without issue.

Firefox 155.0.1

Well, I am in a real mess. Three days ago I lost the ability to access my favourite website. I CAN access the website in the Brave browser. The website owner has told me that it is not a problem with my account with them so it must be a Firefox issue. Before this happened I had been trying to move and delete files on my laptop and have got very confused about EVERYTHING. In that I had deleted my Firefox recovery folder(s). I have managed to move them back into my Home folder before they expire. Now I am being asked to enter my "password" to initiate the restore. But the several Firefox passwords in my laptop are not being accepted. How can I get a new password? If that is not possible do I have to delete my Firefox account? What is my best way to recover from this mess? Any advice is greatly appreciated.

I'm using Mozilla's Firefox Debian package, Firefox 155.0.1 (64-bit), on a desktop. Until this version, my compose key worked with no problem, in Firefox and all other applications. Now it works with all other applications, but not Firefox.

My .bashrc includes this line: export GTK_IM_MODULE=xim

I checked about:config, and focusmanager.testmode is set to false.

Any ideas? I can't type my name without the compose key...

Hi, I am using Firefox For a few years, but for last 1 year my workload is high and I usually need to open several tabs. After I keep tabs open for a while, firefox becomes slow. Closing a few tabs help but I want to know what is causing it. IS there a way to check which tab or extension is causing it? I am using latest firefox on windows 11.

Has anybody else experienced a similar problem? Or can you help me trouble shoot this issue please?

I'm busy playing audio in a tab of the browser. The sound quality is good (rich, full, deep). Next, I open a new window by any means (Ctrl+N / Open link in new window / Menu > New window) As the new window appears, the current audio playback becomes tinny / lower quality. After a 3 seconds, the normal good sound quality starts again.

I'm currently using Bluetooth connected headphones and this happens on different headphones. I have to find some wired headphones first before I can try that. This happens with every new window that I open, regardless of the number of open tabs in current windows or how many previous open windows I already have. This happens regadless if audio enhancements of the output device are enabled or not. Spatial sound is set to off. Windows is set to 'do nothing' & will not adjust the volumes of different sounds when I'm using my PC to place or receive telephone calls.

OS: Windows 11 with latest patches Firefox: latest & older builds Hardware drivers: All manufacturer drivers applied

PS I can replicate this issue by changing between the 'Playback' & 'Recording' tab in the Sound Control Panel applet. That is to say, the same decrease in audio quality happens when I change from the Playback tab to the Recording tab. Audio quality improves again when I change from the Recording tab to the Playback tab https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2026-09-12-15-38-23-1accad.png

PPS My new windows are set to open on 'about:support'

PPPS Can't reply to previously archived question : https://support.mozilla.org/en-US/questions/1525613

Help! My bookmarks tool bar is missing & I cant recover it because your instructions for locating the menu bar don't match what your instructions display. There is NO AltGr displays a bookmark menu BUT I CANT MOVE IT TO MY TOOL BAR. There is NO selected tab, NO menu bar; NO bookmark tool displayed. I have also lost all of my downloads. This has happened in the last month; everything was fine. I am 82 years old & NOT a techie so expect better help than I have received so far during the last frustrating 2 hours of trying to follow Firefox instructions that DO NOT APPLY TO ME. Also the "add images" function @ bottom of this page won't let me send you a copy of the instructions you display to select the bookmark menu bar ... I click on the picture of the problem & nothing happens ... just dead no access to select pictures either.

I have NOT changed my internet provider; I have not changed any settings. This all happened two weeks ago. Called internet provider & they said it was Firefox issue!!! Very unhappy.