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Dear people,

problem: threaded view is enabled > when the child has a new message, the top message is not bold but only underlined. Without opening the thread, I wouldn't know that there are messages in the thread.

Example: Actual default style: In the view, it appears like this > Thread top message

v Thread top message

  - Old Child message
  - New Child message

The style I prefer: In the view, it appears like this > Thread top message

v Thread top message

  - Old Child message
  - New Child message

(see also screenshots for that).

As the solution in https://support.mozilla.org/en-US/questions/1265223 did not work anymore (since starting with Thunderbird 115+ the message list was rewritten from XUL treechildren to a HTML-based table view) I wanted to post another solution if someone stumbles upon this problem via google.

1) Enable customized stylesheet support: a) ☰ Menu → Settings → search for config → Config Editor b) Search for "toolkit.legacyUserProfileCustomizations.stylesheets" and enabled (set it to value "true") it by double clicking

2) Edit the Thunderbird styles by adding your customized stylesheet: 1) Help → Troubleshooting Information → Profile Folder → Open Folder 2) Inside that folder, create chrome/userChrome.css (folder name and filename must exactly named like this; pay attention to not create a userChrome.css.txt by accident when using an editor) 3) Put this into the userChrome.css: /* Collapsed thread that contains unread messages → bold */ tr[is="thread-row"].children[aria-expanded="false"][data-properties~="hasUnread"]

 .subject-line span {
 font-weight: 700 !important;
 color: #000000 !important;

}

/* Keep correct color when selected */ tr[is="thread-row"].children[aria-expanded="false"][data-properties~="hasUnread"][aria-selected="true"]

 .subject-line span {
 color: var(--listbox-selected-text-color) !important;

} 4) Save the file and restart Thunderbird

Dear Folks at Firefox, Mozilla

In last few days I really have a big problem with trying to browse with my favorite browser Firefox. It is that cursor always goes to address bar instead of search bar when I am trying to surf the web. I tried all the fixes that I found online with changing things in about:config still with no solution.

I am running on Windos 11 and using latest Firefox version.

Kind regards Aljosha Mileta

I read online that Firefox is planning on implementing AI features. Given the track record of AI in other browsers leaking private information, bogging down connectivity, and generally being a nuisance towards users, I was wondering if there will be opt out features in future updates? Or know of forum threads that will update with tutorials on how to turn off AI features?

If not, does anyone on this forum have recommendations for no-ai browsers?

Sorry if this is already a problem mentioned but can't find it so here we go. If I receive an email with a link or several links and I click on them I get this noisy message saying there is no app associated with this link. This just started a couple of days ago. I didn't do anything different that I know of. Perhaps this is just a new problem with that awful OS W11.

So, any clues as to what has caused this and what would I look for in app association?

Thanks so much in advance.

Loopy

Trying to report a bug in Thunderbird:

Subject: Missing message preview/snippet in Thunderbird 115 (Supernova)

Hello Thunderbird team,

I’ve been using Thunderbird 115 (Supernova) and noticed that the message list no longer shows a preview/snippet of the email body. In earlier versions, this was available as the “Message Preview Text” column, but in Supernova neither Table View nor Cards View currently display snippets.

For many users (myself included), having a one‑line preview of the message body is an important part of quickly scanning the inbox — it’s a feature Outlook and other clients provide, and it makes Thunderbird much more efficient to use.

Could you confirm if this feature is planned to return in a future release? If so, is there an estimated timeline? Even a rough idea would help us understand whether to wait for it or look for alternatives.

Thank you for all your work on Thunderbird — it’s a great project, and I appreciate the effort that goes into keeping it modern and usable.

This might also belong under accessibility. Or how to organize the screen? At this point I cannot get some messages because there is no space left for it. This has happened gradually but now its impossible. I will attach a screen shot to show the problem. (I would have a tiny bit more room if I could get rid of that line of tags since they come on a dropdown anyway. Thank you so much,

There surely must be a way to permanently disable the nag for "Alternate text" when editing an image in an email? I don't want it, need it, use it... There use to be an extension for it, but that is obsolete by now. Can it be done in the Config editor?

In my Thunderbird, I accidentally deleted the Menu Bar from the new Draft box e.g. including Reply, Delete, Print, Save etc, and I can't link my draft with my Contacts to enter the email address of the recipient.

Please return my Computer to using Firefox default as my browser as it was 2/01 /2026.Ive tried several times to do this w/o success . I was using windows 11 and have been trying to get rid of MS365 which I never used but have been charged for a solution , but have been blocked and refused cancellation after they asked me to change my email address and PW . Insanely confusing !

Update: Apologies, seems it was my mistake. While setting up the signature in the first place I *did* pick up a named anchor from a template <a name="_MailAutoSig">. It was buried in the generated HTML, and I have now found and removed it. Problem, such as it was, now solved.

Is there any way either to remove the yellow anchor symbol which Thunderbird inserts in front of my signature, or to tell the client not to display the symbol? I didn't put one in the HTML signature that I use. There's no "remove named anchor" command. It isn't related to the double -- marker, which I've already removed using config. I have no use for anchors, which for me are simply a visual distraction.

Thunderbird is so good in many ways (calendar synch is great - one of my major bugbears with Outlook - also recipient privacy when sending out group invitations) and it can be quite frustrating in some others (e.g. unwanted features that I've had to dig around in config in order to turn off)

Thanks everyone :-)

[DESKTOP VERSION] The font display size in the email composition window is at least 2 'clicks' smaller that what is actually displayed in the received email. When writing an email I need to do a double Ctrl+"+" in order for the text to be easy to ready. When I read the sent email (sometimes I need to send emails between accounts - I have 14 between my business domain and my personal domain), the text that I entered is the proper size. I can easily see this because of the graphic image in my signature, which is the same size in the composition window as it is in the received email. See attached composite graphic.

Hello and thanks-in-advance: it would be nice if we could re-order the email accounts listed in the left column, so for our particular workflow, we could process emails from accounts in an order we prioritize. Can this be done?

Bonjour M. David et grand merci pour votre soutien. Je suis désolé de vous solliciter autant ! Pardonnez-moi mais je commence à être vieux (83 ans et demi …). Je commence mieux à comprendre votre proposition pour la commande « insérer » (on verra l’autre problème plus tard). J’ai cliqué sur la commande « nouveau message » en même temps que sur la commande « MAJ » (je pense que c’est celle qui permet de saisir une majuscule) mais cela ne m’a rien donné. En revanche, j’ai cliqué sur « paramètres des comptes » et j’ai cliqué sur « HTML » (voir image ci-jointe appelée « HTML »), mais cela ne change rien car je ne vois toujours pas comment ajouter la commande « insérer » dans la barre d’outils. D’ailleurs je n’ai pas vu la mention « composition et adressage ». Par contre j’ai essayé d’ajouter d’autres commandes dans la barre d’outils en cliquant sur « affichage » « barre d’outils » « personnaliser », mais je n’ai pas vu la commande « insérer » (voir image ci-jointe « barre outils »). Si vous avez le temps de continuer à m’aider, je vous en remercie bien sincèrement.

Hello Mr. David and many thanks for your support. I'm sorry to ask you so much! Forgive me but I'm starting to get old (83 and a half years old...). I'm starting to better understand your proposal for the "insert" command (we'll see the other problem later). I clicked on the “new message” command at the same time as the “SHIFT” command (I think it’s the one that allows you to enter a capital letter) but that didn’t give me anything. However, I clicked on “account settings” and I clicked on “HTML” (see attached image called “HTML”), but that doesn’t change anything because I still don’t see how to add the “insert” command to the toolbar. Besides, I didn’t see the mention “composition and addressing”. On the other hand, I tried to add other commands to the toolbar by clicking on “display” “toolbar” “customize”, but I did not see the “insert” command (see attached image “toolbar”). If you have the time to continue to help me, I sincerely thank you.