Thunderbird Beta Notes

Version 68.0beta, first offered to channel users on June 14, 2019

Check out "What’s New" and "Known Issues" for this version of Thunderbird below. As always, you’re encouraged to tell us what you think, or file a bug in Bugzilla. If interested, please see the complete list of changes in this release.

These release notes apply to Thunderbird version 68 beta 5 released July 18th, 2019.

What’s New

  • new

    Run filters periodically. Improved filter logging.

  • new

    "Off the record" (OTR) chat, see the Wiki

  • new

    File link attachments can now be linked to again instead of uploading them again

  • new

    Added a policy engine that allows customized Thunderbird deployments in enterprise environments, using Windows Group Policy or a cross-platform JSON file

  • new

    TCP keepalive for IMAP protocol

  • changed

    Add-on support: Restartless add-ons and non-restartless legacy add-ons using XUL overlays are only supported if add-on authors have adapted them

  • changed

    Theme support: Thunderbird no longer supports so-called lightweight themes. Therefore none of the themes offered at addons.thunderbird.net currently work. Lightweight themes will be converted to WebExtension themes, but this conversion has NOT happened yet. It has happened at addons.mozilla.org. Workaround: Manually install from addons.mozilla.org by dragging the link or .xpi file into the Add-ons Manager.

  • changed

    Application menu aka "Hamburger menu"

  • changed

    Box.com file link provider was removed and is now available as add-on at ATN

  • changed

    UI improvements for external attachments

  • changed

    Improvements to scam warnings

  • changed

    Various UI improvements. Many changes affecting UI, and so problems are expected. Please file bug reports at bugzilla.mozilla.org.

  • fixed

    Malfunction when deleting a message opened in a tab or stand-alone window

  • fixed

    Blank new mail notification under some circumstances

  • fixed

    Spellcheck marks disappeared erroneously for words with an apostrophe

Changed and Fixed in Beta 2

  • changed

    Various theme improvements.

  • fixed

    SMTP password wasn't removed when account was deleted or server or user name were changed

  • fixed

    Calendar: Multiple connections with different users to the same CalDAV server not working

  • fixed

    Chat: Context (right-click) menu and spelling. In each conversation an individual spellcheck language can be selected now.

New, Changed and Fixed in Beta 3

  • new

    OAuth2 authentication for Yandex

  • changed

    Auto-compact threshold increased from 20 MB to 200 MB

  • fixed

    Customising From address broke saving draft and sending message

  • fixed

    Chat: Status selector not working

Changed and Fixed in Beta 4

  • changed

    Thunderbird 68 beta may display a message "You have launched an older version of Thunderbird" and will not allow opening a specific profile. Workaround: start with option --allow-downgrade.

  • fixed

    Find toolbar not fully working

  • fixed

    Display of external or detached attachments not correct in message preview

  • fixed

    Tab and shift-tab not fully working on the main window

  • fixed

    Chat: Ctrl+D and Ctrl+U not working to switch between conversations

  • fixed

    Calendar: Many fixes in Lightning, but note the first unresolved item

Fixed in Beta 5

  • fixed

    Ignore (Sub)Thread not working

  • fixed

    Some search engines not working

  • fixed

    Global indexer causing high CPU loads under some circumstances

  • fixed

    Many fixes of UX/UI glitches

  • fixed

    Calendar: Mailing lists not expanding when added as invitees. Note the first unresolved item.

Known Issues

  • unresolved

    Calendar: Lightning not updating to corresponding beta 5 version. Workaround: Set preference extensions.lastAppVersion to a value of 67.0 to force a refresh. Check version number in the Add-on Manager afterwards.

  • unresolved

    Thunderbird 68 beta may not recognise an existing profile. Workaround: start with the profile manager option -p.

  • unresolved

    The spellchecker may mark words preceding a single quote as misspelled

  • unresolved

    Due to changes in the Mozilla platform profiles stored on Windows network shares addressed via drive letters are now addressed via UNC

  • unresolved

    Calendar: A localized version of Provider for Google Calendar not available at addons.thunderbird.net or the Mozilla FTP server. A US-English version can be downloaded here. The XPI file needs to be installed manually in Thunderbird.

  • unresolved

    Chat: Twitter not working due to API changes at Twitter.com