Mozilla Thunderbird 131.0.1
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What’s New
new
Added mail.threadpane.table.horizontal_scroll for horizontal threadpane scrolling
new
Added checkbox to select/unselect all calendars in the calendar setup wizard
new
Export Thunderbird account settings to Thunderbird Mobile via QRCode
new
Packaged Thunderbird as a Debian package
What’s Changed
changed
Reinstated "All future events" to the calendar event filtering
What’s Fixed
fixed
Repair folder could result in older messages showing wrong date and time
fixed
Thunderbird could crash on startup when syncing folder changes
fixed
Thunderbird could crash on startup
fixed
New profile creation caused console errors
fixed
Some faulty messages were downloaded and never stored
fixed
Clicking on an HTML button could cause Thunderbird to freeze
fixed
Images inside links could zoom when clicked instead of opening the link
fixed
Quick filter state was not reset when a special view was chosen
fixed
Applying column view to folder and children could break if folder error occurred
fixed
Drag and drop to collapsed folders resulted in incorrect collapsed state
fixed
Message list returned to selected message after action on another message
fixed
Messages could not be selected for dragging
fixed
Cards view "replies" button remained styled without new messages in thread
fixed
Could not import binary OpenPGP key file ending with whitespace
fixed
"Remove All Shown" saved passwords deleted all logins if filtered without results
fixed
RSS feed with invalid hostname broke the RSS feed folder
fixed
New Account creation could fail to add SMTP server
fixed
OAuth2 not shown in "Authentication method" menulist for existing Exchange account
fixed
Long email addresses required horizontal scrolling to export accounts for mobile
fixed
Could not drag and drop multiple contacts from address book to destination fields
fixed
Thunderbird could crash when renaming a local folder while copying from IMAP
fixed
Messages could become corrupted during folder compaction
fixed
Delayed sending of message could fail with "DSN & Return Receipt" enabled
fixed
Delayed sending of message could fail when retrying copy to Sent folder
fixed
Thunderbird Flatpak install did not use a branded symbolic icon
fixed
Thunderbird update did not update language pack version until another restart
fixed
Removed the webchannel.allowObject.urlWhitelist preference
fixed
ICS calendar import could fail if it contained non-UTF-8 data
fixed
Searching with "Find Events Pane" failed if an event did not have a title
fixed
Organizer email address for CalDAV calendar events could be incorrect
fixed
Global indexing failed when processing email with invalid calendar data
fixed
Changing calendar.week.start preference did not update calendar views
fixed
Calendar invitation could be missing dropdown icon on buttons
fixed
Searching events by Location, Description, or URL failed
fixed
Calendar event updates were not always sent to attendees
fixed
Calendar printing displayed a blank page
fixed
Visual and UX improvements
fixed
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Version 134.0 | Released January 8, 2025
Check out the notes below for this version of Thunderbird. As always, you’re encouraged toZaloguj lub Zarejestruj się aby zobaczyć!,Zaloguj lub Zarejestruj się aby zobaczyć!, orZaloguj lub Zarejestruj się aby zobaczyć!.
Thunderbird version 134.0 is available for testing purposes only.
System Requirements:Zaloguj lub Zarejestruj się aby zobaczyć!
- Windows: Windows 10 or later
- Mac: macOS 10.15 or later
- Linux: GTK+ 3.14 or higher
What’s New
new
Thunderbird now has a notification system for real-time desktop alerts
new
Add end of year donation appeal
What’s Fixed
fixed
In-app notification messages did not display correctly in dark mode
fixed
In-app notification close button alignment not consistent across platforms
fixed
Thunderbird could crash on startup when using POP3
fixed
New mail notification could show for the wrong folder, causing repeated alerts
fixed
macOS shortcut CMD+1 did not restore the main window when it was minimized
fixed
Clicking the context menu "Reply" button resulted in "Reply-All"
fixed
Subscribe window "Show items that contain" should not have been shown for IMAP
fixed
Downloading message headers from a newsgroup could cause a hang
fixed
POP3 inbox could show new mail with no subject, no sender, and date 1970-01-01
fixed
Message list performance slow when many updates happened at once
fixed
Large virtual folders could be very slow
fixed
"mailto:" links did not apply the compose format of the current identity
fixed
Dragging embedded images from a message to a compose window was not possible
fixed
Authentication failure of AUTH PLAIN or AUTH LOGIN did not fall back to USERPASS
fixed
APOP authenication for POP3 did not prompt for corrected password
fixed
XMPP chat did not display messages sent inside a CDATA element
fixed
Release channel incorrectly opened whatsnew page
fixed
Today pane agenda sometimes scrolled for no apparent reason
fixed
Selecting a display option in View -> Tasks did not apply in the Task interface
fixed
CalDAV calendars without offline support could degrade start-up performance
fixed
Visual and UX improvements
fixed
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fixed
Users may not have been notified if messages arrived in multiple folders at once.
fixed
Message list scrolled to the wrong place on start-up.
fixed
Unified folders could become unusable instead of being automatically rebuilt.
fixed
Some messages may have been threaded incorrectly in unified folders.
fixed
Middle-click autoscroll cursor appeared without arrows instead of expected design.
- New:
- Firefox Translations now supports more languages than ever! Pages in Simplified Chinese, Japanese, and Korean can now be translated and Russian is now available as a target language for translating into.
- The credit card autofill feature is now being gradually rolled out to all users globally.
- AI Chatbot access is now being gradually rolled out to all users. To use this optional feature, choose AI Chatbot from the sidebar or from Firefox Labs. Then, complete the provider selection to see the chat interface become available on the sidebar.
- Firefox now enforces certificate transparency, requiring web servers to provide sufficient proof that their certificates were publicly disclosed before they will be trusted. This only affects servers using certificates issued by a certificate authority in Mozilla's Root CA Program.
- Additionally, the CRLite certificate revocation checking mechanism is also being gradually rolled out, substantially improving the performance of these checks.
- Firefox now includes safeguards to prevent sites from abusing the history API by generating excessive history entries, which can make navigating with the back and forward buttons difficult by cluttering the history. This intervention ensures that such entries, unless interacted with by the user, are skipped when using the back and forward buttons.
- Fixed:
- Made improvements to the Translations feature which will reduce the likelihood that models will invent new, made-up words under some circumstances.
- Various security fixes:
- CVE-2025-1009: Use-after-free in XSLT
- CVE-2025-1010: Use-after-free in Custom Highlight
- CVE-2025-1018: Fullscreen notification is not displayed when fullscreen is re-requested
- CVE-2025-1011: A bug in WebAssembly code generation could result in a crash
- CVE-2025-1012: Use-after-free during concurrent delazification
- CVE-2025-1019: Fullscreen notification not properly displayed
- CVE-2025-1013: Potential opening of private browsing tabs in normal browsing windows
- CVE-2025-1014: Certificate length was not properly checked
- CVE-2025-1016: Memory safety bugs fixed in Firefox 135, Thunderbird 135, Firefox ESR 115.20, Firefox ESR 128.7, Thunderbird 115.20, and Thunderbird 128.7
- CVE-2025-1017: Memory safety bugs fixed in Firefox 135, Thunderbird 135, Firefox ESR 128.7, and Thunderbird 128.7
- CVE-2025-1020: Memory safety bugs fixed in Firefox 135 and Thunderbird 135
- Changed:
- The refreshed New Tab layout previously rolled out in Firefox 134 to users in the United States is now being made available in all countries where Stories are available. It features a repositioned logo to prioritize Web Search, Shortcuts, and Recommended Stories at the top. The update also includes changes to the card UI for recommended stories and allows users with larger screens to see up to four columns for better use of space.
- The “Do Not Track” checkbox has been removed from preferences. If you wish to ask websites to respect your privacy, you can use the “Tell websites not to sell or share my data” setting instead. This option is built on top of the Global Privacy Control (GPC).
- The "Copy Without Site Tracking" menu item was renamed to "Copy Clean Link" to help clarify expectations around what the feature does. "Copy Clean Link" is a list based approach to remove known tracking parameters from links. This option can also now be used on plain text links.
- Developer:
- A warning is now displayed when content-visibility is used on elements where size containment does not apply.
- Introduced a new console command $$$ that allows searching the page, including within shadow roots.
- Enhancements to WebExtension debugging: Workers are now available in the Console panel’s context selector and breakpoints function correctly in content scripts.
- Web Platform:
- Added support for a post-quantum key exchange mechanism (mlkem768x25519) for HTTP/3.
- The attribute values which indicate the coordinates of PointerEvent may now be fractional values rather than only integers. This allows web apps to handle the events with higher-precision coordinates when the target element is transitioned by CSS and/or the viewport is zoomed.
- The behavior of mouseenter, mouseleave, pointerenter and pointerleave events was changed for improved spec compliance when the last mouseover or pointerover event target is removed.
- Added support for the WebAuthn getClientCapabilities() method.
What’s New
new
Messages are automatically adapted to dark mode with a quick toggle in the header.
new
New "Appearance" Settings UI to globally control message threading/sorting order.
What’s Changed
changed
Criteria for closing idle message databases.
What’s Fixed
fixed
Thunderbird Release channel was not displayed in "About Thunderbird".
fixed
Crash could occur when shutting down during MAPI send.
fixed
The error message for compacting a corrupted local folder was not useful.
fixed
Deleting or detaching attachments in a saved .eml file appeared to work but failed.
fixed
On HiDPI screens, clicking addresses in the header could show popup off-screen.
fixed
Opening an .EML file in profiles with many folders could take a long time.
fixed
Some messages may have been threaded incorrectly in unified folders.
fixed
Unified folders could become unusable instead of being automatically rebuilt.
fixed
Folders at level 3+ were not auto-discovered when IMAP subscriptions were ignored.
fixed
New subfolder did not inherit parent view, sort order, sort type, or columns.
fixed
With "Fetch headers only" enabled, messages could not be sorted by size.
fixed
Selecting starred messages did not update immediately.
fixed
Marking a unified folder as favorite did not show it in favorite folders.
fixed
Users with many folders experienced poor performance when resizing message panes.
fixed
The UI could falsely report a message as encrypted when a null cipher was used.
fixed
Search messages dialog list could not be sorted by clicking the header icon.
fixed
Sending to multiple SMTPs could fail silently due to missing address book.
fixed
"Replace" button in compose window was overwritten when the window was narrow.
fixed
Changing the UI font size did not apply to some dialogs.
fixed
Deleted Gmail messages stayed visible until compact/expunge, despite settings.
fixed
Export to mobile did not work when "Use default server" was selected.
fixed
Account settings menu could be loaded twice.
fixed
Account Settings updated font size were not reflected in the content frame.
fixed
Add-ons: Context menu entries were incorrectly aligned.
fixed
Middle-click autoscroll cursor appeared without arrows instead of expected design.
fixed
Some functionality was missing for newsgroup messages opened from a file or URI.
fixed
Notifications for new mail were not showing for IMAP.
fixed
Message and folder lists could display incorrect line spacing after restart.
fixed
Clicking a 'mid:' link could clear the thread pane and cause errors.
fixed
Release channel incorrectly showed What's New page after update.
fixed
"Save Link As" was not working in feed web content.
fixed
Sort indicators were missing on the calendar events list.
fixed
Visual and UX improvements
fixed
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