Beta Notes

Thunderbird Desktop

Version 124.0beta | Released February 21, 2024

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 124 beta 5 released March 11, 2024.

System Requirements: Details

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

What’s Changed

changed

Cards UI styling of expand and collapse for threads

changed

Spam and Junk message styling in Card UI adjusted to be less distracting

What’s Fixed

fixed

Using middle-mouse click on a message (open in background tab) did not work

fixed

Group-by-sort Unified folders were slow to open when expanded-all

fixed

References and Reply-To headers were not set if they were included in mail.compose.other.header

fixed

Header pane was not shown when pref mailnews.headers.showUserAgent was set

fixed

"Open message in conversation" and "Open message in containing folder" from a standalone window failed

fixed

"Get Messages" toolbar button was initially disabled after opening a message from a file in a new window

fixed

"Get selected messages" menu items did not work

fixed

Sender in multimesage view was right aligned when the text wrapped to multiple lines

fixed

"Quote message" menu item in compose window did not work when replying to message opened in separate tab

fixed

POP error messages from server were not displayed

fixed

After changing password on an IMAP account, the account could become locked due to too many failed login attempts

fixed

Settings: Checkbox to enable underlined links was missing

fixed

Settings: Updating tags failed if Automatic Updates were disabled

fixed

Selecting "Match all messages" in Filter Rules dialog did not disable all search criteria

fixed

Toolbar customization window contents overflowed the window width

fixed

New mail notifications in Windows 11 stole focus from current window

fixed

"Copy/Cut" context menus did not work in extension options pages

fixed

Performance improvements and code cleanup

fixed

Keyboard navigation within search toolbar did not work

fixed

Cards UI style fixes

Fixed in beta 2

What’s Fixed

fixed

Threaded view was slow to load

fixed

Multi-language spellcheck sometimes skipped languages

Fixed in beta 3

What’s Fixed

fixed

Visual improvements to "Reorder Attachments" popup

Fixed in beta 4

What’s Fixed

fixed

S/MIME-only signed messages sometimes incorrectly displayed signature as invalid

Fixed in beta 5

What’s Fixed

fixed

IMAP folders containing other folders could not be deleted due to Thunderbird using "unsubscribe" IMAP command

fixed

Draft messages were not replaced when saved to an IMAP server without UIDPLUS support

fixed

Flatpak builds only had the en-US spell check dictionary available

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