Beta Notes

Thunderbird Desktop

Version 120.0beta | Released October 25, 2023

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

These notes apply to Thunderbird version 120 beta 7 released November 15, 2023.

System Requirements: Details

  • Windows: Windows 10 or later
  • Mac: macOS 10.15 or later
  • Linux: GTK+ 3.14 or higher

What’s Changed

changed

Default sort order of messages in message list changed to descending (newest at top)

What’s Fixed

fixed

Forwarding multiple messages as attachments failed

fixed

Messages with slow-loading images were delayed being marked as read

fixed

Cards View UX improvements

fixed

Toolbar View widget fixes

fixed

Search Folders dialog improvements

fixed

Vcard photos were not imported when using opening the file with Thunderbird

fixed

RSS feeds with lengthy attachment filenames cut off visible content

fixed

RSS feeds with no favicon displayed default icon in the folder color

fixed

Calendar startup performance improvements

fixed

Publishing calendar events via authenticated WebDAV failed

fixed

Various accessibility improvements

fixed

Visual and Theme improvements

Fixed in beta 2

What’s Fixed

fixed

No messages or calendar items were displayed on startup

fixed

Message list scrolling fixes

fixed

Insert image dialog was not properly sized on some localized builds

fixed

The "unencrypted subject" icon was always briefly displayed when replying to a message

fixed

Publishing calendars to invalid URLs did not display a helpful error

fixed

Converting a message to an event failed when the message pane was not displayed

fixed

Redirect dialog displayed for WebDAV calendars was too small

fixed

Visual and theme fixes

New & fixed in beta 3

What’s New

new

Beta branded logos for Thunderbird beta releases

new

Autocrypt Gossip key distribution added

What’s Fixed

fixed

Advanced GnuPG keys may be protected with an unexpected passphrase

fixed

Some text remained incorrectly visible in the message list when using "Grouped By" sorting

Fixed in beta 4

What’s Fixed

fixed

"Read Messages" button in Account Central did not retrieve mail from POP accounts

fixed

States of collapsed and expanded threads were not maintained when switching folders

fixed

Pressing "n" to move to the next unread message on an unread, collapsed thread opened the thread and selected the second message instead of the first

fixed

"Open Message in Conversation" was incorrectly enabled for selections of multiple messages

fixed

Initial message was not automatically selected when opened in conversation

fixed

Subject lines were excessively indented in "Grouped by" views

Fixed in beta 5

What’s Fixed

fixed

Events canceled by the organizer incorrectly sent cancelation message

Fixed in beta 6

What’s Fixed

fixed

If started offline, Thunderbird did not download some IMAP messages after going back online

fixed

Newsgroup users using FQDN identity generated message ID headers with incorrect domain name

fixed

Matrix messages did not display

fixed

Link previews had poor legibility in dark mode

Fixed in beta 7

What’s Fixed

fixed

Plasma's task switcher displayed the default icon when running the Thunderbird Flatpak on Wayland

fixed

Link to Flatpak manifest was incorrect

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