Forum der Gemeinschaft Firefox

Since updating to Firefox 141.0 (Win11), I've had issues with performance and on-screen behaviour of dynamic web pages/sites. The problems do not manifest on Chrome, or on a reinstalled version of Fx 140.0.4 on the same computer running at the same time (and with copy of original profile's data files, extensions etc.), they do manifest on a new Firefox 141.0 profile with only one tab open.

The problem happens on dynamic pages (e.g. gmail.com, boardgamearena.com/lobby) but doesn't seem to happen on static pages. Note that this doesn't depend on page elements moving around the visible window (e.g. panels opening and closing).

The manifesting problems:

• Screen pointer rapidly switching between standard arrow pointer, mouse with index finger (clickable link) and serifed-style insertion bar, even when positioned on a part of the page that is not a link or a text box. Video (MP4, <1MB) showing behaviour at https://imgur.com/a/absjTh4.
• Browser intermittently fails to respond to browser actions (mouse clicks, keyboard entry)
• Small increase in browser CPU usage

Problem is worse if general CPU usage (from other applications) is already high - low CPU usage reduces but doesn't eliminate the problem. (Established by changing my BOINC settings and/or snoozing BOINC and observing; I have a gadget that monitors CPU and other resource usage.)

The fact that I can see the problem occurring on Fx 141 but have Fx 140.0.4 working fine at the same time on the same page, suggests that this is a Fx 141 issue. Regular malware scanner and an alternate found no issues.

Happy to do more diagnostic testing if it's helpful.

I am using a new Windows 11 computer. I use Firefox for almost everything. But it opens many processes and it very quickly gets to the point where anything I do causes a hang. If I am listening to music or a podcast it pauses and buzzes. This AM I turned on the computer and opened Firefox, without reopening an old session. I had open two windows with two tabs in each window. Using Windows Task Manager I determined that Firefox has twenty-one processes open. Some of them have the efficiency leaf and some do not. I do not use an Add-On manager, but use MalWareBytes for a VPN and protection. Please help.

Good day,

The old version of Firefox prior to July 26, 2025 opened multiple browsing tabs. These tabs looked like the ones from my toolbar.

When I uninstalled Firefox after July26, 2025 and reinstalled it I opened and still all of the tabs would open again.

I tried to delete the history and still the tabs opened. I refreshed and reset and still the tabs opened.

I do not want to lose saved history or have to delete multiple tabs every time I open the browser.
Thank you 
DR

I had to rebuild my Windows 11 this week. Since installing Firefox, streaming videos in Youtube are distorted with significant tiling during the first few seconds. The video has to be rewound manually to see the beginning unhindered, sometimes rewound several times because the tiling still happens, albeit less so with each rewind. I had to rebuild the Windows 11 because some mysterious problem, possibly from a Windows update a couple of months ago, caused a growling hardware contention noise during video or video games that would cycle through several harmonic levels and sometimes move across the stereo plane. Just before the rebuild it became continuous and untennable. The rebuild did not get rid of that problem completely, but there have only been a couple of tiny hardware contention noises since then. This tiling of Youtube video is brand new. The system is pretty much the same now as it was before the rebuild. I still have the old OS on another internal drive so it would be possible to compare files. I just want to know why all of a sudden Firefox is showing this momentary tiling in Youtube. I tried Chrome and there was no titling. Thanks for your time.

I typically use Firefox every month to access my Xfinity and Verizon accounts to download my billing statements for expense reports. I have noticed recently that Firefox will not show the complete website for Xfinity.com, where I can see my billing statement (after login), but if I copy/paste the link to Chrome, it shows the complete site and billing statement immediately. Is there an option to restore functionality to Firefox?

Thank you

i am trying recover my previous firefox account as my laptop went into down can you help . i have tried all options and it just sets up me a new account .

[email address]

[email address]

[mobile number]

I have my credit card info saved and previously I could click on a credit card and it would autofill the numbers for me. Now the credit cards still show up when I click on the space to put the credit card number in but but it wont fill the info into the form. I just get a blank space after I click on the saved credit card. Any suggestions on how to fix this? Thank you for your help.

Cary

Today I went to TikTok, was using it earlier in the day also, when it showed me logged out and when I go to log in using my email, a windows security pop up shows, saying that I should insert my security key into the USB, something I don't have, and that this is being asked because of Firefox, which I can click cancel, but when I try to sign in with my email, I can't seem to, the password doesn't seem to be working, and can't sign in with the QR code through the phone which connects with the app. Still signed in just fine on Chrome and the app on my phone, so not sure what is up, as that shows my password should be fine due to neither of those logging me out if my password had been changed.

That I changed one thing yesterday related to something "secure", was that I enabled SecureBoot in BIOS, because games like Battlefield require it now for the anti-cheat and I'm curious if this has somehow affected this in some way as that's the only thing that changed recently for me.

I signed onto my parents computer that was assigned to a school district and now everytime I open firefox on any of my devices their website keeps popping up. I've signed out of their computer and have tried deleting and reopening my account, and nothing seems to work.

I cannot find "Sync and save data" button in my mobile browser, making it impossible to sync the devices. The instructions provided by the settings lead me into the dead end.

How to manage browser settings to prevent the following:

Hmm. We’re having trouble finding that site.

We can’t connect to the server at yourewardcard.com.

If you entered the right address, you can:

   Try again later
   Check your network connection
   Check that Firefox has permission to access the web (you might be connected but behind a firewall)

I keep getting messages from Firefox to confirm account with the code. Looks like somebody keeps trying create an account with my e-mail address. I never hit confirm and I just delete the message. I keep changing my password.