I-Firefox Community Forum

Issue Description: I’m experiencing a problem with fullscreen mode while using YouTube on Firefox on Windows 11 with a dual-monitor setup. When I enter fullscreen, the video does not cover the entire screen. Instead, I can still see parts of the Windows desktop or background around the edges of the display.

This issue only happens on Firefox and only when using fullscreen mode on one of my monitors. I have already checked my display settings, scaling, alignment, and hardware acceleration, but the problem persists.

System Details:

Windows 11

Dual-monitor setup

Browser: Firefox (latest version)

Issue: Fullscreen video shows borders and does not fully cover the screen

Expected Behavior: The fullscreen video should completely fill the selected monitor without showing any part of the Windows desktop.

Please advise on how to resolve this issue.

I can't seem to locate how to activate the microphone in the AI sidebar. I have Gemini selected, and when I hit the microphone to dictate I get the following message.. Unable to access the microphone. Please check settings.

I looked through Firefox settings and my laptop's but I don't see where it is turned off or asking for activation.'

Tom Z.

Firefox version 145.0 in Linux Ubuntu 22.04.5 LTS. When I open Firefox all tabs from previous session are gone. On "Startup" I have checked "Open previous windows and tabs". Which worked before but not now. It is very frustrating. How do I fix? The Profile Manager opens the settings and "Open previous windows and tabs" is checked. Checking "ask before closing multiple tabs" doesn't help.

I recently heard about Mozilla's potential future plans to increase the browser's AI features, and wanted to voice my concerns about this.

I avoid using AI due to environmental, privacy, and ethical reasons, and one of my main motivations for choosing Firefox over another browser is specifically because of the option to turn AI features off. (And I believe this is the case for a large portion of the userbase.)

If Mozilla opts to push for more AI implementation within Firefox, I will switch to another browser.

Since the 145.0.2 update web pages are loading very sloooooooow. Also, images are loading very slowly, if they load at all. At the start pages would not load at all then about a week they started loading but very slow as mentioned. Any ideas/help will be very much appreciated. I am using Windows 11.

Hello,

I am experiencing an unwanted UI behavior in Firefox. When I select text on any webpage, Firefox displays a floating “Ask ChatGPT” bubble above the selected text. This happens regardless of the site. I want to disable this feature, but Firefox provides no setting or preference to do so.

This is not caused by any extension. I verified this by checking about:addons, and I only have the following extensions installed:

DuckDuckGo Privacy Essentials

Firefox Translations

Gibiru for Firefox

None of them inject any ChatGPT functionality.

I then opened about:config to disable the feature, but the usual preferences do not exist on my system. Keys such as:

ui.textSelectEnabled

browser.selection.menu.enabled

browser.ml.chat.enabled

browser.ml.chat.openai.enabled

browser.ml.enabled

are missing, and Firefox only shows the “add new preference” (+) icon. That means Firefox did not expose any toggles for this behavior.

I am including a screenshot showing the unwanted “Ask ChatGPT” popup that appears when selecting text.

I need instructions on how to permanently disable this text-selection popup, or confirmation on whether this is part of a controlled rollout or experiment that cannot be disabled on my version of Firefox.

Thank you.

Is there a button I push or a feature I enable to make sure that I'm opted-out of any future updates that include AI 'features'? Or should I switch to Vivaldi now and save time?

In Windows 10, I could open Manage Bookmarks with one mouse click on Manage Bookmarks on the Bookmarks toolbar, and the bookmarks would open at the top of my organized list, with the Bookmarks Menu already displaying. One click! Fantastic!

Now, in Windows 11 I am unable to open Manage Bookmarks on the toolbar, as it doesn't exist, and does not exist in the Customize toolbar display either. Instead I must click on the "Show Your Bookmarks" icon on the Bookmarks toolbar, then click on Manage Bookmarks, then must scroll the results to the top, then click on Bookmarks Menu. This procedure, compared to how simple things were with Firefox, using Windows 10, is a real waste of valuable time.

Is there any way to open Manage Bookmarks, with Bookmarks menu displayed, with one click of an icon on the Bookmarks toolbar, as was the case with my Windows 10?

I am experiencing an issue where Google.com (other google domains work fine) will not load in Firefox, resulting in an infinite loading loop. Other browsers on the same system (Brave) work fine.

Here are the steps I have already tried:

Reinstalled Firefox completely

Removed Firefox via sudo apt remove --purge firefox -y

Cleared all user profiles and caches: ~/.mozilla/firefox, ~/.cache/mozilla, ~/.config/Mozilla

Reinstalled via Flatpak

Tested network connectivity outside Firefox

curl google.com works correctly

DNS resolution works via getent hosts google.com in the host system

Checked proxy settings

Ensured “No proxy” is selected in Firefox → did not resolve the issue

Tested in Safe Mode (disabling extensions)

Problem persists, so not caused by extensions

Tried disabling IPv6 inside Firefox

network.dns.disableIPv6 set to true → no effect

Cleared DNS cache inside Firefox

about:networking#dns → clicked “Clear DNS Cache” → no effect

Disabled DNS-over-HTTPS (Secure DNS)

about:preferences#privacy → “Use secure DNS” → disabled → no effect

Disabled HTTP/3 (QUIC)

network.http.http3.enabled set to false → no effect

Verified Flatpak network permissions

flatpak info --show-permissions org.mozilla.firefox shows network access allowed

Inside the Flatpak shell:

flatpak run --command=sh org.mozilla.firefox getent hosts google.com

→ returns only IPv6 address: 2800:3f0:4001:839::200e google.com

I am incredibly concerned and disappointed over the announcement of the intention to turn Firefox into an AI browser. I use Firefox primarily for privacy concerns, and the already existing AI "features" that it has are pushing my boundaries already. The addition of more AI into this browser will slow it down, deplete natural resources, and ultimately push me away from it. I've been using Firefox happily for over 15 years now, don't ruin the good thing we have here.

AI is trash that doesn't do what it's being touted as capable of doing, and I'm sick of having it shoved in my face. Don't flush decades of good will down the toilet for no reason.

I recently tried to connect to two different meeting sites. Both times I got a pop-up noting (correctly) that camera and microphone are blocked. I'm able to click to enable the microphone but I never get the option to enable the camera.

I tried going to Settings>Security&Privacy>Camera but that only allows me to remove previously-enabled websites.

Clicking on the settings button in the address bar shows audio and recording settings but no camera.

What am I doing wrong?

Fedora 42 Firefox 145.0

Right now, when you use AI features in Firefox, each request opens a new chat with the provider. But sometimes I would like to send the webpage selection to an existing chat for better context, especially when I am looking for guidance through something like the AWS Console. Is there any option to achieve this?

After the latest auto update all of my history, tabs/windows, and bookmarks were deleted and I can't recover them. I have tried importing bookmarks and it does not allow me to upload an old data file and I can't restore my previous session. I tried checking both profiles but neither had my information saved and now when I open the about:profiles says "Another copy of Firefox has made changes to profiles. You must restart Firefox before making more changes."

I'm scared to try anything else because I don't want to mess anything up further but I really need my tabs and history back.

I restarted my computer and then reopened firefox and it had updated and I noticed my bookmarks were gone but my windows/tabs were open, so I tried to choose a file on the bookmark backup and nothing was happening so I restarted and after that all my history and tabs were gone and I couldn't restore them.

My settings: Downloads: save files to: [custom default folder, unimportant] Always ask you where to save files: ENABLED

Applications: PDFs: Open In Firefox (because when the browser has such a nice built-in pdf viewer of course I would like to use it)

Expected behavior: Browser will open the dialog box for where to save the pdf, save the pdf, then open it in the in-browser viewer from the location it just saved to. Or possibly: save the file to TEMP and then open it in browser, I can see the argument for that behavior, though it wouldn't be my first instinct.

Actual behavior: Browser blindly saves the pdf to the specified default folder, then opens it in the in-browser viewer.

What is the actual point of the ALWAYS ask checkbox here? From what I can find extant on the forums the devs somehow don't seem to consider this a bug, so does anyone know how to wrangle the config page and/or some kind of extension into producing the actual logical behavior for these settings?

The 2-year-old support page "View synced tabs from other devices" gives 2 methods for syncing all your tabs from one Windoze FF to another. Neither one does anything at all for me now. The "right-click on the device in the sidebar" sounded SO promising, but it does not cause anything at all to happen. And checking the "sync tabs" box does indeed make them all show up in the sidebar list, but does not open anything. So besides clicking on each of the hundreds of tabs listed, how can I do this, or is it just another FF functionality lost to time?

Doing a "find" ends up showing a greenish (so I'm told) background with white text. Want to guess which "find" in the attached image is difficult for me to find?

What I would like: Find (focus): yellow text on black background Find All: white text on black background

Yes, of course it would be nice if that would auto switch to black on yellow if the website default is black background.

I can hack userContent.css and get the selection function to work:

/* General highlight (for text selection, etc.) */

selection {

   background: #FFFF00 !important;  /* Yellow background */
   color: #000000 !important;       /* Black text */

}

I can hack userContent.css and get the Find All (sans the focus) to work.

But firefox always provides the focus with white on green. Even if I do something like this:

/* Customize the color of highlighted search text */ input[type="search"]:focus::selection {

   background: #FFFF00 !important;  /* Yellow background */
   color: #000000 !important;       /* Black text */

}

I tried several themes. No change. I tried changing Windows Preferences. No change.

There must be a way to make this "find" feature useful for me.

Several times now I've closed firefox while having the open previous windows and tabs on startup on only for all my tabs to have been closed (with this time in particular being annoying due to losing tabs that I needed to have the specific link for). Is there any way to restore tabs lost in this way?

Over the past few updates, I’ve noticed an issue with Firefox where it no longer restores my previous session when reopening the browser.

I normally keep four tabs pinned and about five additional tabs open for browsing and work. In the past, I could simply click the X to close Firefox, and when I reopened it, all my tabs that are pinned and unpinned would automatically come back. Recently, this stopped happening. Now, if I close Firefox, it opens with a fresh window instead of restoring my previous tabs.

I’ve already checked the setting under General/Startup, and Open previous windows and tabs is enabled. Because of this issue, I avoid closing Firefox entirely, since rebuilding all my tabs each time has become a hassle.

Is there a way to fix this? Any suggestions would be appreciated.

Thanks :)