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My page throws errors in Firefox Nightly such as

Expected color but found ‘undefined’. Error in parsing value for ‘background-color’. Declaration dropped. preview.htm:1:1

and

Expected color but found ‘undefined’. Error in parsing value for ‘color’. Declaration dropped. preview.htm:1:1

The page references ten CSS files besides having dozens of its own CSS declarations. The issue is tha the reference provided to the error (:1:1) does not indicate where I can find the error. That is, I don't know which declaration is at fault. Is there some straighforward way to find the declaration in question?

Although listed as one of the options for default language, the current version of Firefox, which is my default browser, does not accept Brazilian Portuguese as the default language. It only accepts the Portuguese version, from Portugal which, to me, who speak Brazilian Portuguese, with all due respect, is a pain in the butt. I have tried, dozens of times, to delete the Portuguese version and set the Brazilian version as the default language. It works until I shut down the computer. The next time I turn on the computer, to my eternal dismay, Firefox cancels my previous language setting and reverts itself to the damn Portuguese version, which I dislike to the extreme.So I am, hereby, taking the issue to you with high hopes that this abdomally be straightened out once and forever. Many heartfelt thanks and wishing you sucess. Damião

Uninstalled Adblock, have looked in Extensions on Mozilla and its not showing, however, with another website I have just tried to access,error message saying I have Adblock installed when I havent. I've also put this website on the safe websites and not made any difference.

Many thanks

E

How can I disable COMPLETELY the tab previews a/when I hover over a tab, and b/ when moving tabs (using left click and hold)? I've tried the various options listed in other questions on the support forum: nglayout.enable_drag_image = false browser.tabs.hoverPreview.enabled = false browser.tabs.hoverPreview.showThumbnails = false

Along with unticking "Show tab previews in the Windows taskbar" in settings.

None of these works to completely disable the previews.

Is my only option to reinstall an older version of Firefox... again?

Firefox 133.0b6 (64-bit) Windows 10 Pro

How the hell do I remove this crappy sidebar!?!?! Your suggestion of tapping the cog and clicking on sidebar button DOESN'T WORK! REMOVE IT! It is annoying, terrible! Why would you mess with something that didn't need to be fixed ? What are you, Jaguar? Remove it now, actually do something and fix it.

You guys ever going to get around to improving how to interact with bookmarks? When I have downtime during the day and I'd like to move my bookmarks around I can't! This has been an issue for a long time and I know others have asked. This is the one huge reason why I feel forced to use other browsers on my phone when not at home! Please get on this so I can just say on one browser for phone and home.

So I want a different menu from the default top line menu. I can get the line for my input to appear. I can move the icons I want into position. But I CANNOT get the system to accept that. There is no no button "accept as create". It all disappears when I do anything.

My son's email messages are being blocked. As far as I know he is the only one. Also, when I try to open a site from the email function, it just keeps searching... This appeared about two weeks ago. I searched for "Blocked Email" and only one has been blocked; a conspicuous spam.

I have a Linux PC where, when I right-click, I see shortcut letters in the context menu (the one that appears when you right-click). So, if I want to inspect an element, I right-click on it and press Q, and the inspector opens right away. This saves me time from navigating through the menu. However, on my other MacOS PC with Firefox, it doesn't do the same. I've searched for solutions but haven't found any.

Can you please tell me why when I open my Virgin Email Account, the Auto Spell Check does not function? All my other email account I have, the Spell Check works fine, but not on Virgin Email. Yet it works fine on any other Broswer I have. The option Check your spelling as you type box is ticked

I cannot pin the extension to the toolbar. The extension is not shown in the puzzle icon dropdown, and it is not in the overflow. Please add an automatic pin to the toolbar when a new extension is added! How do I pin it now?

Why is "recently bookmarked" in the menu? I have my bookmarks in folders if I need them and don't need that cluttering my screen. Like who doesn't just leave the tab open if they're going use the page soon enough "Recently bookmarked" is needed?

Hello,

 An update or two (maybe more?) ago, the plus sign with which we add shortcuts to the Firefox browser home page/new tab page disappeared, so now we can no longer add shortcuts on the home page/new tab page.  Please help.  I am running Firefox Version 129.0.2 (64-bit) on a Windows 11 Pro 64-bit if that makes any difference.  Thanks.

Thunderbird puts a LOT of my mail into Junk/Spam boxes and I am missing some important stuff. Rather than go hunting for stuff I missed in other mailboxes, I'd rather deal with them as they come in. I've checked online and turned off everything I can find to prevent the Junk filters from working, but stuff is still showing up in Junk/Spam filters. What do I need to do to turn it ALL OFF? Thank you.