Firefox Community Forum

I installed the new 140 update, and now when I open the bookmark sidebar, the "Search bookmarks" field is highlighted, and the entire list of bookmarks is darkened to the point that it's pretty much unreadable. This was never the case before. I NEVER use the 'search bookmarks' function. My bookmarks are organized into folders and sorted alphabetically. How can I undo this setting so the sidebar looks like it used to?

Thanks!

Firefox quite often will remove, replace, add, or layer text as I use it. It has been doing this since I first downloaded it, and I haven't had it for long. (I will say that it isn't the first program I've seen do this. the only other program I've seen do this is Zotero.) I'm not doing anything weird with it, it just happens as I use it. Some of the screenshots I've submitted are of what I'm literally typing right now.

I've tried using troubleshoot mode, but it works just fine when I'm using troubleshoot mode, so I can't appropriately use that mode.

Certain colours have changed after an update to version 140.0. Most noticeable (and barely readable for me) is the unvisited textlink colour: it was light grey but is now suddenly light blue/cyan? See screenshot with Google Search as example. How can I change this back? The only place in FF settings for colours is under Contrast settings but that's unusable: it overrides settings of sites, altering their layout. Strangely enough there are no General settings to alter colours?

I just updated Firefox and the bookmarks on the left become all black. Black font on black background. Unreadable. Before that, the font was white.

How do I change that ?

Thanks !

Latest FF update changed the background of my bookmarks toolbar to a dark gray.. And made the text BLACK! Practically unreadable! Previously the toolbar was BLACK (Real 000 black) and the text was white.. As is my desktop.. Much easier on old eyes this way.. Is there a fix for this? I couldn't find one in Settings.. I've been using Firefox since the early days and XP.. I'm too old for more learning curves.. Help! (And thanks for wading through what's turned out to be another epistle.. Young men dream dreams.. Old men tell stories..It's an old guy thing.. )

Hello,

Since update 140.0, the side panel is dark (no problem), but the text is black instead of white!!! Which makes reading black on dark is very complicated... Could you fix this problem with a new update? Thank you so much in advance.

After every update, Firefox starts to a blank screen and will not start loading the webpage url put in for over twenty minutes to a half hour. During this time other browsers on my Win 10 PC load immediately so it is not a network issue. It is Firefox. When I see that an update is pending I hesitate to do the update because I know I will lose the use of Firefox until it is ready to respond. It just hangs with "loading X.com" showing at the bottom left of the blank screen. I have been using Firefox for a long time and in the past year or longer it has become very unreliable. There are also instances where without an update it will do this and the only way I can get it to work is to clear the cache and the history through settings. What is going on with Firefox! (And lately there is an update every couple fo days!

There was a previous thread but i cannot see that any solution was offered. This is so inconvenient that if i cannot solve this i will be obliged to use another browser

Greetings,

I'm having issues using Firefox as my primary browser ever since I was recently asked to setup passkey login at work. I'm on Windows 10. This is a virtual passkey that uses my work mobile device as the associated passkey device, which was setup using Microsoft Authenticator. When I attempt to login to my account using Firefox, I am prompted with the message pictured in the attached image (it wants me to insert a USB passkey). However, if I switch my default browser to Edge/Chrome and attempt the same thing, then I do not have this issue. Instead, it allows me to use my phone to snap a QR code and login that way.

Any idea how I can stop Firefox from forcefully asking for a hardware passkey?

Cheers,

Today, I signed on to use my laptop, as usual, nothing different about how I sat down or anything, and I try to open Firefox and it flashes something on the screen, but I don't catch it as it immediately closes as well. It looked like a popup with a button, if that helps. I then try to open it again, realizing that I've got that bug, the one that causes browsers to open for a split-second and then close immediately, so I try to fix it how I fixed Opera GX before I stopped using that. Restarting? Nothing. Looking online for answers? Found some! I try starting it in Troubleshoot Mode, I can see down in my taskbar that Firefox is trying to open in Troubleshoot Mode but isn't. Okay, let's try something else, the Profile Manager. I use the Windows+R key to open the Run window and type in firefox.exe -p which according to a couple of websites, -This one included- should have opened the profile manager in a popup, but all I get is a flash of a window and nothing else. Then, I finally try uninstalling and reinstalling the app, upon reinstallation it asks if I want to keep my settings and whatnot, I say yes, problem persists. I uninstall and reinstall again, only this time declining the ability to keep my settings, the problem persists.

I'm extremely confused as to why nothing is working, and I don't want to have to reinstall Windows itself like I saw a comment on Reddit recommend, so if anybody has a slight idea of a solution, I'd be grateful, thank you in advance.

Edit: Just tried downloading and running Chrome, it worked for a second until it randomly closed, I know this isn't the support site for that browser, but I thought I'd mention that the "Not opening, just falshing for a millisecond" isn't just a Firefox thing for me.

With a catastrophe with my System I almost reinstall all Software including Firefox than I found the address bar changed a lot in the latest version.

For the old version when I type words, press the down key to switch your engine below, but the new version they disappear! Even for alt+↑ or alt + ↓ are disabled now, may it be too radical?

I really like the engines below in the old version, thus, a option for let the engines shows below may pretty helpful

Hello, Since the update on 24 June 2025, bookmarks are displayed in black text on a black background. Is this normal? If not, how can I resolve the issue? I had set it to dark mode, but even when I switched back to light mode, nothing changed. I would appreciate help from the community or Mozilla if anyone has a website address to contact them. Have a nice day.

I am having Firefox crash on startup much like Firefox Desktop crashing on startup, initially in version 140, but I have downgraded to version 139 in my troubleshooting and I'm getting the same symptom.

It is frustrating that this does not seem to leave any records in the Windows event log or the Firefox crash reports, and that the fact that there's a known issue of this severity is rather hard to find.

I get this error code when I click this link: https://app.getresponse.com/click.html?x=a62b&co=zuZIy&lc=hxmU75&mc=Iu&s=Hb9xCO&u=qU&z=EF9yGAP&

This is for any link on 1Funny.com Newsletter

Using Windows 11 just reloaded on new hard drive (Solid State). Old hard drive took up smoking. This error does not happen on any other site and did not happen before.