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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?

I have two Outlook addresses which appear identical in their settings. One address receives and sends mail perfectly. The other receives no mail in its Inbox, does receive mail in Junk and can send mail perfectly. I have repaired the Inbox folder, compared settings with the account which works but can see no difference. The machine is a Windows 11 laptop and the problem has been ongoing for the past year. TB is currently running version 128. Any idea where I have gone wrong?

With the release of Firefox 133, I switched from the add-on Tree-sized tabs to the newly implemented Vertical tabs, and so far I really like the feature. Although, I was wondering if there was a way to reduce the width of the expanded sidebar? Thank you for taking the time to answer my question.

Does anyone know where Mozilla wallpapers are stored? I wanted to set a wallpaper from Mozilla's menu as the desktop wallpaper on my laptop. I looked for hidden files and checked the forums, but I can't find them in the given locations e.g. my profile. Maybe these files are masked somehow. I'm looking for particular wallpaper from the abstraction category (screenshot). Can anyone tell me how to find it?

Hello all, I was wondering if there is any reason why Thunderbird is reminding me like every other day of the "quick archiver" feature. In the general settings I have the "Thunderbird start page" disabled on launch but I still get the tab regularly informing me of the "new" feature. It annoys and I would like to turn it off. Any ideas? Many thanks! spamalot

Yet another sterling example of why change is usually bad. Why did Firefox, Google and other browsers (though don't know about Duck Duck Go) drop the 100 results per page option? I've always had that enabled and now that it was removed it makes searching extremely tedious and time wasting. Please offer a SIMPLE AND QUICK way to restore this option ASAP. Thank you.

Hello Can you offer push activation directly on all the folders of an e-mail address? When there are multiple sub-folders (for automatic sorting by filter under thuderbird PC), it's tedious. Thanks

Calendar data is correct in preview, but incorrect when editing

The dates in the preview (when I move the mouse over the calendar entry) are always correct. However, they differ from the entry when I click on Edit.

But it works for me when I delete cache.sqlite. However, I then delete the newer entry (which is displayed correctly in the preview).

Any ideas? Where does the preview data come from? Obviously from a different source than the data displayed in the edit view?

I want AI to ALWAYS open when opening the sidepanel. That's why you have a side panel... So how the ... do I STOP Firefox from always opening Bookmarks when the sidepanel is opened?

And No, it doesn't remember last saved choice.

And please fix the ... scaling problem with AI making users manually press UP ARROW to send the message instead of ENTER when the sidepanel is below 40% of the ... screen. This is highly ... annoying!

Is it possible to bookmark a particular section of a page, whereas the bookmark will take you to that location?

Textmarker was suggested in another thread, but apparently it is no longer working.

How do I get rid of these constant firebox pop ups that block tabs that I have open. it is EXTREMELY affecting my ability to use my laptop. I WANT TO KNOW HOW STOP THIS BS

How do I remove the sidebar permanently. It is now as I said above about 2.5cm wide and growing! I want it gone and none of the solutions give any idea how to do this. The show/hide button only made the damn thing expand!

My installation details are

Installation Details

 Install Dir: D:\Mails
 Locale     : en-US
 App Version: 128.4.4
 GRE Version: 128.4.0
 OS Name    : Windows 10
 Target CPU : x64

The version details are

Software\Mozilla\Mozilla Thunderbird 128.4.4 | GeckoVer | 128.4.0 Software\Mozilla\Mozilla Thunderbird | | 128.4.4 Software\Mozilla\Mozilla Thunderbird | CurrentVersion | 128.4.4 (en-US) Software\Mozilla\Mozilla Thunderbird | GeckoVersion | 128.4.0

An import into the Thunderbird Android fails. The desktop app generates a total of 6 QR codes , the android app is unable to scan them. The QR Code generator on the phone works fine . The phone has Xiaomi HyperOS and android version is 14 UP1A.231006 007

Hello

I use Firefox 132.0.1 under Fedora 14 Linux. Whenever I click an urls in another application (e.g. Libreoffice, Keepass...) a new tab is opened in Firefox (according to Firefox's settings), but Firefox itself does not pop up in the foreground, it remains in the background. I highly appreciate the setting 'open links in tabs instead of new windows'. But FF only comes to foreground in case I deactivate 'open links in tabs instead of new windows'. How can I prevent FF to stay in the background in case 'open links in tabs instead of new windows' is enabled?

Thank you in advance

There is a setting on Firefox that prevents me from responding to comments. I tried on another browser and do not have the same problem. Yahoo sends notifications that there was a response to my comment with a reply button. Although when pressing reply it is suppose dto take you to that comment and it does not. It takes you to the beginning of the comments. I have not changed any settings.

When I send an email using Gmail, Firefox stores a copy in "Sent Mail", another copy in "Sent", and another copy in "All mail" . Why is this and how can I stop this? Or how can I delete two of the duplicated storage locations? Thank you

Recently a new sidebar appeared on Firefox on my desktop. I actually really liked the change because I have wanted to move my tabs to the side for a while. I had tree style tabs installed and I was a little annoyed that I couldn't disable the tabs on the top bar. But now I can!

My laptop however does not have the new sidebar yet and when I look for updates it says there aren't any. My laptop has limited screen space and I much prefer to have this new ui choice but I can't enable it. I understand that they probably update new designs in batches to test the waters but is there a way to get around it and enable it on my laptop too?

I use the same Firefox account for both so it seems a little counterintuitive to have different experiences on different devices on the same account.

Also very much thank you for this change! It's something I've wanted for a while. I also have one little suggestion and that is to have the option for a similar feature to tree style tabs on the sidebar tab layout.