Diễn đàn hỗ trợ Firefox

After update to 141.0.3(64bit), sidebar comes with waste space, as pink area in attached image.

It didn't shows in these years I'm using FF, I want to remove it but keep sidebar exist, like it was before. Where can I adjust it ?

If it's needed to be exist, why not put it on top of Sidebar ?

I was having an odd issue the other day, that I now solved by comparing the settings on a working Firefox profile with mine.

For some reason, on one of my multiple Firefox profiles a list of web apps wasn't working. Among them were Discord, Miro Board, and Google Pay. I was suspecting that they all had the same issue, but didn't know what it was at that time.

The security settings were the obvious suspect (Ad-blockers, DNS, HTTPS enforcement etc.) because clearly something was being blocked, however nothing helped. The solution was in the Network settings. (See screenshot) I was using Manual proxy settings from the time I messed with I2P networks (or something similar).

I am not sure why having a proxy to localhost (127.0.0.1) on HTTP would somehow cause very specific major apps to stop working, while others keep working fine, but it happened to me anyway.

For anyone in a similar situation, with those particular apps not working, check your proxy settings.

I have recently installed the containers extension and have been having a bit of trouble with one site (the others are fine), which seems to originate from the manner in which the site is structured. As it references new pages, they are often in a different URL. For example, you start in login.site.com, which then tries to load dashboard.site.com, but it fails authentication on dashboard.site.com because it opens in a different container. Which then tries to open the login.site.com page again, which displays the login page, but showing it tying to complete the original authentication. I have tried to add each step along the way, but without success. Is there a way to overcome this?

macOS 15.6 Firefox 141.0.3 - my preferred browser

I've seen a number of posts regarding this problem since the Firefox 141 update. I've tried a number of suggestions, although my problem seems slightly different.

I can apparently login to reddit OK but when I try to access a subreddit thread, a warning comes up - see image.

I have cleared Firefox site data, cookies, cached files, etc - problem remains.

I have restarted Firefox in Troubleshooting mode - problem remains, so not an extension.

However, https://old.reddit.com has no problems with Firefox, lets me access threads, etc and comment.

No problems accessing reddit with Safari or DuckDuckGo browser.

I use the flickr website many times during the day without issue, unti now. When trying to login this time I get the message shown in the attached image. I have gone through all the usual procedures, clearing cookies etc, including starting Firefox in safe mode, but still the problem persists and I am now at a loss. As a test, I even installed the Chrome browser and I was able to log into flickr with no problem. I have a laptop running Window 11 and the latest Firefox and the problem is the same on that - no flickr login.

Thank you for your help

Hi, Today 8-7-25 Mozilla automatically upgraded to version 141.0.3. Now all of my bookmarks are gone. I can't find them on my pc. There are two profiles listed in the profile section. Neither seem to have my bookmarks. I have a lot of bookmarks and some are very needed. Please help me recover all of my bookmarks. Thank you, Geo

I've had to replace my computer today and when I've installed Firefox and signed in it no longer shows than I paid for a year's Premium Relay in June this year. What to do?