Forum der Gemeinschaft Firefox

As soon as I signed into the browser to sync my account, this issue began. I have deleted profile locks, started new profiles, opened in troubleshooting mode, fully reinstalled, and the issue continued (even before signing back in). I am out of troubleshooting steps and would like to avoid blowing my VM away if at all possible. Someone please help!

I am having issues making the menu bar reappear after I enter full screen and I am using only the touchscreen on my laptop I can't get it to reappear I have to tap the screen like crazy, when in the past I could just slide down and it just worked it.

My browser is using 2,3 Gb of extra ram it goes away by restarting but comes back in 5-10 min. It occurs wathing twich, i have tried disabling extentsions but it doesn't work. in about:memory the readout is as thoug it is keaping an extra copy of open browser files in ram.

2,511.83 MB (100.0%) -- heap ├──2,301.00 MB (91.61%) -- committed │ ├──2,016.65 MB (80.29%) ── unused-pages/dirty │ ├────230.75 MB (09.19%) ── allocated │ ├─────32.96 MB (01.31%) ++ bin-unused │ └─────20.65 MB (00.82%) ++ (2 tiny) └────210.82 MB (08.39%) -- decommitted

    ├──210.21 MB (08.37%) ── unmapped
    └────0.61 MB (00.02%) ++ unused-pages

Well I am continuing and repeating my question placed in August 2026, where I found that Firefox V154.x stalled in an erratic way that made it completely impossible to use it or to send a crash report. So your suggestion to send a crash report was not very bright or helpful. I deliberately omitted the subsequent updates, to try again after a main version update. Alas, we have the same situation again in V157.0, this time more predictible. The program stalls immediately after trying to open another tab. And again, you can kill the program only by task manager.

The additional question I have, is how to switch off the annoying update message, as long as Firefox is dysfunctional after an update, I'd like to avoid any update under all circumstances. I have to work with Firefox, so it is more than an leisure thing for me, I cannot afford to cripple Firefox by an unintended update.

I had to reinstall the last known working version (153.03) to send this message.

When I watch YouTube videos, Firefox behaves strangely. After a few minutes of watching, I try to scroll to the comments, and then Firefox starts to lag. Scrolling becomes very sluggish, and the entire image freezes while scrolling. The website stops responding, but the sound continues. The only way to fix this is to minimize and then maximize Firefox. Then I can scroll again and the problem starts again. This problem occurs regardless of whether I clear the cache, use an ad blocker, or which screen I'm using Firefox on. Sometimes, one of my screens even freezes and displays stripes. However, this only happens when I'm using Firefox and YouTube. I have no problems with any other applications for exampmple playing games on one screen and let music streaming app playing on the other screen. Even my Cubase 15 work like sweet on booth screens without errors. Why is firefox acting so strange? Firefox never completly stops or closed itself.

Firefox Version 157.0 (64-bit). AMD Software: Adrenalin Edition 26.8.1. Windows 11, version 26H2 installed October 1, 2026 (previous updates also had the same issue with firefox).

I also got some Firefox Updates when i opened it. I was hoping they catched the issue but it seems like the same.

Have a great day :)