Diễn đàn hỗ trợ Firefox

As of 12/9/25, Firefox seems to now prevent Theme add-ons from working if there is a contrast setting configured in Windows configuration. (Version 146.0) Previously, this allowed a very aesthetically pleasing view. I would greatly enjoy having that option again. Thank you.

12/10/25 am my yahoo bookmarks are opaque. they are still there just not visible until you click on them. Later 12/10/25 I rolled back firefox to earlier time and all looked correct again. today 12/11/25 opaque bookmarks again.

Selecting "Help About Firefox" causes the window to appear but this window then freezes with no information. It is possible to close the window and continue with Firefox. This happen nearly always but occasionally works correctly. Current Firefox version is 146.0 but the problem is not limited this version. System is Kubuntu 24.04, KDE Plasma Version 5.27.12 and QT Version 5.15.13 I have tried several things. Deleting the .Moziila folder will permit the window to work once but after a restart stops working. Any new things to try would be appreciated.

I had to have my laptop serviced. When it came back, I downloaded Firefox and logged into my account. Usually, all bookmarks and passwords would load back up, since they were bound to my account. Unfortunately, this time after had synchronization finished, none of my data was present. It's as if my whole account was wiped. The only thing I did was change my password. How can I restore everything?

I'm using W11 & Firefox/Mozilla 'Version 146.0 (64-bit)' in ‘Dark Theme’ - my sidebar bookmark in use is now 'highlighted in BRIGHT blue' which is VERY ANNOYING - can I get rid of this feature? Is there a way to adjust the highlight color/intensity? Please let me know. If there is no adjustment possible, please take care of this in your next version. Thanks, John

Hi Mozilla I hav got a problem with Firefox on Kubuntu 24.04.3. Everytime the computer is restarted Firefox crashes the first time it's started. That's not a big problem, starting Firefox again don't take long. But the problems is exceeding. If i start Firefox by clicking a link in a mail in Thunderbird. And Firefox has not yet been started, It crashes, but now it's also invaliding the Task bar on the screen where Firefox was started. Invaliding means that I cannot start apps from that screens taskbar, and the clock has stalled, none of the tools works etc. The only possibility solution I have been able to figure out, is restart (It's like going back to Win 98). Sometimes I am able to start a app from that invalid taskbar. But it's not the one app that i clicked on. Even though I can trigger it via Thunderbird, the invaliding of the taskbar will occur after a while. And I have to restart. I am not sure if this is the right place to post. But Firefox is always involved, but maybe Thunderbird or Ubuntu was the right place? Every time Firefox crashes there is send a crash report to Mozilla, but is has been going on for a while, so i guess that nobody is looking at the crash report. If I use Chromium instead of Firefox I don't see the problem.

I have created a website related to food, restaurant menus, and nutrition tools: https://nutritioncalculators.net/ https://nutritioncalculators.net/ . Everything works fine on most browsers, but I’m facing some issues on Firefox. Specifically, some features, forms, and interactive tools don’t always load correctly or behave as expected.

For example, the nutrition calculator tools sometimes freeze or do not respond when I try to use them in Firefox. I want to make sure my website works smoothly for all users, including those using Firefox.

Can someone please guide me on what might be causing these issues and how to fix them so Firefox displays all features properly?