Opaite japopyre Tekoha Aty

Hello! I'm having a problem where a specific tag keeps un-applying itself. I have a number of filters that look for specific words in emails, and tag them accordingly -- all of my other filters are working just fine, but one specific one has decided to stop working. It has exactly the same settings as the other ones, and when I manually run the filter, it correctly applies the right tag.

But, minutes later, the tag will un-apply itself, and I cannot figure out why. For some reason, an older message is staying correctly tagged with that filter, but newer ones un-apply the tag. This same filter and tag used to work just fine. Other tags on emails from the same source work fine, too.

Dear Thunderbird Support Team,

I am writing to report an issue with custom message tags in Thunderbird that started occurring around September 28, 2026 (likely following a recent update).

Issue Description: The problem applies to all folders (Inbox, Sent, custom subfolders, etc.) and is strictly isolated to user-created (custom) tags.

When I apply a custom tag to any email, the tag visually attaches to the message. However, as soon as I switch to another folder in the folder pane and then return to the original folder, the custom tag disappears completely.

Key Observations:

No Relation to Filters: This issue happens with regular emails in any folder, with no filters involved.

Custom Tags vs. Default Tags: This affects only custom tags created by the user. Default built-in tags (e.g., Important, Work, To Do) save correctly and persist after switching folders.

Timeline: All custom tags assigned before September 28, 2026, are still preserved correctly on older emails. The issue affects any new attempt to set a custom tag after this date.

Steps to Reproduce:

Select any email in any folder.

Apply a user-created (custom) tag to the email.

Observe that the tag is visually assigned.

Click on any other folder to switch views.

Return to the original folder — the applied custom tag is gone.

Could you please assist in resolving this issue or suggest a fix/workaround? Custom tags are essential for our daily email management.

Thank you for your help and support.

Best regards,

Ihor Hirnyi E-mail: ig@zrn.com.ua

Mamy w firmie dostęp na 6 stanowiskach do jednej skrzynki pocztowej, ale tylko na 4 z nich działają oznaczenia etykiet. To znaczy na jednym z 4 działających stanowiskach zaznaczam że sprawa z maila została zrobiona ( wybieram etykietę zieloną " zrobione") i pokazuję się to tylko na tych 4 a na pozostałych 2 nie widać tej etykiety, ani odwrotnie. Jeśli zaznaczę etykietę na jednym z dwóch stanowisk to nie widać jej na żadnym stanowisku. Etykiety mają wszędzie te same nazwy, kolejności i kolory. zainstalowane są na każdym stanowisku najnowsze wersje programu. a serwer nie ma poustawianych blokad

Hello, I use the 32-bit portable 153;2 version of Thunderbird. But now when I label a message according to my list of labels by color, the selected message returns to its original color. Labeling no longer works, even though old messages retain their colors well. Thank you for your response. Ph. Costes

I have quite a few tags and quite a few message filters which are set to add tags. In the last few days, although the rule will automatically add a tag when I run it, it seems to be being deleted again almost immediately.

I have deleted several now obsolete message rules in case there was some kind of stack overflow problem, and likewise removed several obsolete tags, but it seems to be still happening. Is there a maximum number of permissible tags and/or a maximum number of permissible rules that invoke tagging?

This is a new phenomenon to me. I am on the latest stable release of Linux Ubuntu and Thunderbird 153.2.0esr (64-bit)

Установив цветовую метку и после обновить, то данные пометки сбрасываются и сообщения снова становятся белыми Проблема возникла примерно после 12 часов по МСК и продолжается до сих пор

Можно воспользоваться кнопкой "Получить сообщения", после ее нажатия также слетает цветовая метка (скрин)

Hi ... I'm checking out Thunderbird as a replacement for Outlook Classic. So far, Thunderbird stacks up pretty well for my small office use. (Thanks!)

Looking at the address book, it looks like the automatic sync to Google Contacts doesn't preserve the contact label (e.g., "Neighbors").

Copilot is helpful ... it steers me to the gContactSync extension, which I see doesn't support recent Thunderbird releases.

Is there any other way to round-trip labels/groups between Thunderbird's address book and Google Contacts?

Thanks!

Why do I see a green dot only occasionally next to some saved messages but not next to other saved messages? Important note: I have reported the police service in my Canadian city to the Alberta (provincial/state) government's Police Review Commission, and the Police Review Commission is conducting an investigation. Please ensure nobody from Calgary Police Services can access my Thunderbird email program. Thanks.

Dzień dobry Mam taki problem, W programie Thunderbird mam skonfigurowane dwa konta obydwa na ....o2.pl Na jednym koncie co jakiś czas w folderze "Odebrane" znikają wszystkie wiadomości i po jakimś czasie pobierają się o nowa wszystkie nagłówki (co oczywiście trochę trwa) ale problem jest w tym że znikają mi zaznaczone etykiety. To bardzo utrudnia mi pracę z tym programem. Na tym drugim komcie nic takiego nie występuje. Sprawdzałem w konfiguracji serwera oba IMAP wszystko tak samo także w synchronizacji i pozostałe ustawienia takie same. Może ktoś pomoże ja w tych tematach jestem mocno w tyle :) Za pomoc z góry dziękuję Marek

Tags summary display has disappeared.

I can search for tags, but the convenient "tags folder" is gone. Please help.

Tried in safe mode with add-ons and toolbars/controls disabled. Error console is empty when assigning or removing tags.

Is there currently a way to add a searchable comment or text note to incoming emails? I often wish for a way to help organize and/or find notes about specific topics that aren't listed in the subject or body of the text. If there is not a field or other way to do this, can it be added? Thanks

Hello. How to display categories in messages (applied in Thunderbird for Windows) ? On Thunderbird for windows messages are displayed withe the color of the category. Best regards.

When I let thunderbird compress the inbox and other folders, the not read flags on all new emails get reset as if I have read all of the new emails. Compressing the inbox and other folders should have no effect on the flags showing a message has not yet been read. That only makes sense. The not read flags getting reset started happening several versions before 145.

I've come over from Postbox as that app is no longer being supported. In Postbox there was one file (panacea.dat) that controlled how many old locations you would see in the Move To menu. Once the number of items got to be a bit too muchj, I would delete that file and it would clear the Move To menu item. Is there such a file in Thunderbird that controls the Move To menu, or can it somehow be controlled by a setting in Thunderbird? Thank you.