Beta Notes

Thunderbird Desktop

Version 115.0beta | Released June 8, 2023

Check out the notes below for this version of Thunderbird. As always, you’re encouraged to tell us what you think, or file a bug in Bugzilla.

These notes apply to Thunderbird version 115 beta 6 released June 29, 2023.

Thunderbird 115 (aka SuperNova) release is approaching fast! The Supernova UI features an updated user interface, designed to be more modern, customizable, and with code that is easier to maintain and improve.

Learn more about "Supernova"

Follow the details in the Thunderbird beta topicbox group.

System Requirements: Details

  • Windows: Windows 7 or later
  • Mac: macOS 10.12 or later
  • Linux: GTK+ 3.14 or higher

What’s New

new

User-defined OpenPGP passphrases now supported

new

Option to show Tags in Folder Pane added to Folder Pane meatball menu

new

"Move To" and "Copy To" actions added to Folder context menu

new

Quick Filter buttons are now more easily accessible via keyboard navigation

new

Added new icon for display options

What’s Changed

changed

OpenPGP messages now default to using combined signing and encryption

changed

Updated icons for "Calendar", "Tasks New", and "Edit" tabs

What’s Fixed

fixed

Removing items from Unified Toolbar by dragged outside of toolbar during customization now behaves more intuitively

fixed

Double-clicking on draft messages in global search did not open compose window

fixed

Incorrect context menu was displayed when right-clicking on column headers in Message List

fixed

Right-clicking on unselected messages in Message List did not work

fixed

Selected text from unrelated message was quoted when replying to another message via context menu

fixed

Message Reader sometimes did not correctly reflect selected/deselected messages when using "Grouped by sort"

fixed

Unicode character set information was not included in message header when composing message via "Forward" or "Edit as new message"

fixed

Embedded images now include filename and extension in header if none is included

fixed

"Move To" button on Unified Toolbar moved both selected message and message adjacent to selected message to chosen folder

fixed

Drag-and-drop did not work for attachments when dropping into macOS Finder

fixed

Context menu could not be opened in OpenPGP key manager using keyboard

fixed

User's public encryption key was not sent in autocrypt header under certain circumstances

fixed

"Passphrase" tab of Key Manager was incorrectly shown for public keys

fixed

IMAP messages marked as deleted showed "Delete Message" instead of "Undelete Message" in context menu

fixed

Newsgroups could not be reorganized using drag-and-drop

fixed

Pausing updates on "Blog & News Feed" account did not dim account name after restarting Thunderbird

fixed

"Install Add-On" link did not work in install confirmation pop-up

fixed

Duplicate Matrix clients were created under certain circumstances, resulting in duplicate messages under the same account

fixed

Calendar time-of-day indicator increasingly drifted ahead of current time when staying on calendar tab without switching to other tabs

fixed

Clicking "Details..." button on invite in calendar did not show details

fixed

Unfocused notifications could incorrectly move focus around UI when navigating Thunderbird with keyboard

fixed

Message List was incorrectly announced as "tree view" to screenreaders when in unthreaded mode

Changed & Fixed in beta 2

What’s Changed

changed

Unified Toolbar customization now disabled until Spaces Toolbar has finished initializing

changed

Mail, Calendar, and Task toolbar items migrated to Unified Toolbar; Old toolbars removed.

changed

Quick Filter toolbar buttons now collapsed into a single "Filters" dropdown for small window sizes

What’s Fixed

fixed

HTML messages that set a favicon were able to change the mail tab icon

fixed

"Gentle smile" plain text ;) emoticons were incorrectly rendered as "Strong smile"/"Laugh"

fixed

Menu items in "View" toolbar did not work

fixed

Clicking "Junk" icon of non-Junk message in the Junk folder moved the message to the Inbox

fixed

Thread pane selection updated unnecessarily

fixed

Unified Folders improvements

fixed

Quick Filter improvements

fixed

Unified Toolbar button label styles improved

fixed

Folder context menus were shown on mode header lines

fixed

Upstream RNP version numbers now recognized as official in about:support

fixed

Screen readers did not automatically read the next message after deletion

fixed

Missing icon for non-secure mail accounts in "Get Messages" menu added

fixed

Changing Today Pane date with mini-month or mini-day display did not change the agenda date

New, Changed & Fixed in beta 3

What’s New

new

OpenPGP signature filenames now always end in ".asc"

What’s Changed

changed

Added "Move Up" and "Move Down" options to Folder Mode context menu

changed

Updated various strings for easier localization

What’s Fixed

fixed

RSS feed subscriptions could not be added via drag-and-drop

fixed

RSS feeds did not update unless "Remember websites and links I've visited" was checked

fixed

NNTP message streaming did not work, resulting in uncaught errors

fixed

Moving events by drag-and-drop in day view or week view did not display dragbox on drop target

fixed

When opening .ics file, "Import Calendar Events and Tasks" window could not be resized and window buttons were inaccessible outside border of window

fixed

Various UX improvements

Fixed in beta 4

What’s Fixed

fixed

"Tray icon always on" option did not work

fixed

Manually-configured accounts were silently deleted after pressing "Finish" on Account Setup page

fixed

Repairing local folders made messages in folder temporarily disappear

fixed

Loss of connection while moving multiple messages to an IMAP server could result in duplicate messages on source and destination servers

fixed

Star button did not appear as yellow when message was selected in card view

fixed

Incorrect context menu was shown for links in messages

fixed

Email attachments could be opened before being completely saved to disk

fixed

Expired OpenPGP keys were shown as "Not found" in Account Settings

fixed

Thunderbird now checks index page of news feeds for favicon if feed itself does not have favicon

fixed

Layout and styling issues with OpenPGP dialogs

fixed

Various UX improvements

New & Fixed in beta 5

What’s New

new

Local keyboard navigation of Unified Toolbar is now possible

What’s Fixed

fixed

Filter field of quick filter bar was not cleared when switching folders

fixed

Folders did not always populate in Folder Pane when switching to Unified Folders

fixed

Folder "Properties" and "Favorite Folder" context menu items did not work

fixed

Thunderbird sometimes crashed when deleting folders

fixed

Message list did not always populate when selecting Unified Folders

fixed

Message list context menu could not consistently be opened using keyboard

fixed

Search folder message list did not update after modifying the folder

fixed

Quickly toggling columns in Message List opened the selected message

fixed

Subject lines longer than the available title bar width in "New Message" window displaced title bar buttons on macOS

fixed

Encrypted messages could not be decrypted using revoked OpenPGP key

fixed

Deleting or moving a contact from one address book to another did not update the list of cards

fixed

Various UX improvements

Changed & Fixed in beta 6

What’s Changed

changed

Copy, Move, and Move Again options in folder context menu are now positioned before Properties

changed

Thunderbird now displays a warning when trying to send a message if the current OpenPGP key is expired

What’s Fixed

fixed

Unified Toolbar customizations could not be saved when only changing button style

fixed

Copying IMAP folders between servers failed when source folder was previously copied and deleted from destination server, and destination server is set to only mark items as deleted

fixed

Forwarding messages as attachment via drag-and-drop did not follow preference to add file extension to attachment file names

fixed

Message header was not displayed in message preview intermittently

fixed

Files saved via Save Attachment did not appear under Saved Files

fixed

Multi-part messages could not be converted to tasks

fixed

Thunderbird no longer requires a primary secret key to be available when signing messages

fixed

Thunderbird was unable to send signed messages with OpenPGP subkey

fixed

NNTP message headers were not shown

fixed

Encryption of new Matrix direct messages was not detected correctly

fixed

Matrix direct message rooms were duplicated under certain circumstances

fixed

OpenPGP Message Security dialog was sometimes positioned incorrectly

fixed

Various UX improvements

Known Issues

unresolved

Vertical view

unresolved

Mail Toolbar settings have not yet been migrated to new Unified Toolbar

unresolved

WebExtension APIs are currently broken

unresolved

Thunderbird "Supernova" related bugs

Learn What’s Next

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