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Hello,

I have been testing all browsers I use (Firefox, Chrome, Edge) on Cloudflare Post-Quantum Key Agreement to verify PQC support. They all support the X25519MLKEM768 hybrid scheme (i.e. Cloudflare web page returns "You are using X25519MLKEM768 which is post-quantum secure").

The issue: When I run the test in Firefox multiple times by doing repeated hard refreshes (Ctrl+Shift+R), quite often the result is "You are using X25519 which is not post-quantum secure". Sometimes the very first run after opening Firefox gives the X25519 (failing) result. "Often" varies. Sometimes it's around 10 fails out of 50 tests, other times it's 1 out of 50. It seems random.

I have read that sometimes networking equipment or even ISPs can be the cause of PQC requests falling back to non-PQC due to the long keys in PQC, but I do not see this intermittent issue with Chrome or Edge on the same computer/network/ISP as Firefox. I have not seen a single failure so far on those two browsers. The only variable I am aware of is the web browser.

I also tried connecting to a cellular hotspot as well as disabling my Norton 360 firewall and the results are the same as above.

Looking for help to resolve this issue. Thanks.

Hi there,

I'm wondering if I am experiencing intended behavior or if I've stumbled upon a bug. I am sometimes downloading files in a staggered manner (i.e., waiting for files to finish downloading before I start the next file downloads). However, any file after the first in that session shows an inaccurate progress indicator in the toolbar which includes progress of the already completed downloads.

For example, if I download two files completely, then start the download of two new files and both sit at 0%, the progress bar for the downloads actually shows 50% completed (2 files at 100%, 2 files at 0% -> Average of 4 files at 50%). I can't imagine this is intended behavior, for I imagine users would like to know how their current downloads are progressing only. This behavior is only fixed when I clear previous downloads, which resets the list to only active downloads, or when I restart the browser and start a new session.

Is there a setting where I can make the indicator report only active downloads?

Any insight is welcomed, thank you.

Bruce Caress

May 7, 2026, 15:17 CST

Hello, I've been watching MSNOW at 4pm eastern and after about half an hour it crashes. I get a message to send a report and restore the tab. I restore the tab which works for maybe ten minutes and crashes again. I am using Windows 11 on a new computer. I'd appreciate some assistance. Thanks. Bruce Caress

Moderator note: This question has been edited to precise Firefox and OS version, based on the crash reports.

hello dear Please can you review my addons (extensions) for three days to activate my eyes, but no epidemics

https://addons.mozilla.org/en-US/developers/addon/js-deep-scraper-pro/

When I search for something it shows up in English, but some text under the result is French as shown in the picture. I use latest Firefox with Google search engine, and I have all settings in Google set to English, And same for Firefox settings

Love Firefox by the way... So, autocomplete in the search bar is often helpful, don't get me wrong, but it redefines the delete/backspace key to be context-sensitive. Now, sometimes it does what I expect and backs up one, erasing the character I just typed. However when autocomplete ghost text is present, that same key removes the ghost text only, leaving the character I'm intending to remove. This is enormously inconvenient as I now must watch to see what autocomplete is doing and adjust my behavior to comply. Were I designing I would not make the delete key dual purpose context sensitive, instead I would do both at the same time! Delete what I just typed and remove the ghost text. Safari started this, I complained and of course got no response. Subsequently I noticed the same behavior in Firefox. My suggestion, request, is that search delete key behavior not be decided for me. Either make this Safari behavior a settings option, by default is OK, so that I can choose, or (my preference) delete both ghost and previous character with a single keystroke! Best regards and keep up the good work. Dave

I was doing some work, when suddenly everything slowed, I checked my Activity Monitor, and it showed Firefox at nearly 20 Gigs of RAM & about 30% of CPU usage! I opened the Task Manager, and it only showed Firefox using 2 Gigs, and 25% of CPU. After a few minutes, the memory usage just as suddenly dropped down to the 2 Gigs as shown in Task Manager, and things seemed to be back to normal.

Why did this happen? I did nothing that would cause a spike, didn't open any new videos, or other high memory usage pages, or applications. I have seen FF showing a similar 20 Gigs of RAM usage, slowing everything down, several times recently, and wonder what could be causing these sudden spikes.

Both Mozilla products spontaneusly disappeared from my computer. Firefox requested a reinstall, and all was recovered. Firefox completely disappeared, and I had to restore from backups. I am seriously worried. What is going on?

This browser keeps doing this very annoying thing where it automatically pins recently visited commerce sites in a suggestions bar of a new tab's url. If I go delete the specific pinned page from my history, it will just grab a new page from the same website and pit that instead. For example, I recently visited chewy.com to purchase dog food. A page from Chewy became pinned in the dropdown for new tab urls. I deleted that page from my history. A different page from Chewy became pinned. This went on and on until I deleted *every single Chewy.com page from my history.* This is unwanted and frustrating behavior. Who does this help? I did my business on that website. I do not want to be told to go back and visit the site that wants my money. I know how to browse the internet. This is extremely annoying.

I use Firefox as my browser and have used Yahoo as my home page and browser for decades. Starting a few days ago, every time I type in the Yahoo search bar I get a Google search page result. I opened Bing and tried to search on their page and got the same result - Google. This is driving me crazy. I want my old Yahoo search back. I am at a loss as to how to fix this. I have looked at the Firefox settings and, of course, Yahoo is no longer listed. A shame. I don't know what to do at this point. Maybe the answer is to get rid of Firefox, but it has worked well for me for a long time. Any help will be appreciated. Thanks.

Ever since the last update of the Firefox program, I am frequently getting the "Server Not Found" message when I click on links online. If I switch browsers, the links work just fine so it is obviously Mozilla's problem and not anything with my "modem or router" as I am told int he "what can you do about it" message on this error. Mozilla needs to look into this problem and update whatever is causing the failure to link message.

I have always used Firefox. Today - some update has erased all my bookmarks. it says import from Edge - but I don't use that. I lost my job last month so all my bookmarks are so very important and now they are all gone. OMG

Please help.

I am getting error 'Code: RCPTA:2' when trying to log into the Detroit Free Press (freep.com). I had never had this problem before but just performed a Firefox update and now have this error. It's like the Firefox update changed a setting related to Javascripts.

Site is https://www.ziggogo.tv/nl/home which is a Cable Television provider's site.

Is days of Yore, we users were asked to tell if a site did not work with Firefox. Now I had to find this forum :-(

I'd like to understand what makes Firefox incapable of playing the film featuring my father from the sixties, two 2 years before he died. For me it is not a real problem, because Chrome waits always in the background to take over. I'd just prefer to let it wait for eternity.

I'm on Windows 11.

Leo

Signing into Netflix it only requires my email address. Then it gives me a message that captcha is required, then gives me an error message, then puts me through to my account. Anyone in the world using your browser and my email address can access my account.

Gentlemen, isn't your browser using a lot of RAM? I've been freaking out about it in recent years. That's only with 25 tabs open!! Despite the fact that the system was installed just a day ago, without any tweaks!!!