Thunderbird Beta Notes

Version 65.0beta, first offered to channel users on December 30, 2018

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 65 beta 4 released January 29th, 2019.

What’s New

  • new

    FileLink for WeTransfer

  • new

    WebExtensions FileLink API to facilitate FileLink add-ons. WeTransfer is already included and Dropbox is available as add-on.

  • new

    Various theme improvements including a dark message list/thread pane

  • new

    When multiple language packs are installed, the UI language can now be selected in the Advanced Options. Preference intl.multilingual.enabled needs to be set (and possily also extensions.langpacks.signatures.required needs to be set to false)

  • changed

    ADD-ON SUPPORT: Restartless add-ons continue to work if their authors have made the necessary minor adjustments. Non-restartless legacy add-ons using XUL overlays are only supported if add-on authors have adapted them. Apart from Lightning/Calendar there are a few that have been adapted, like "ThunderHTMLedit", "Compact Header" and "Signature Switch". Instaling legacy add-ons now requires a restart. Legacy add-ons can now specify an options page again.

  • changed

    DICTIONARY SUPPORT: Only WebExtension dictionaries are supported now. Please download new dictionaries from addons.mozilla.org since addons.thunderbird.net still provides "legacy" dictionaries compatible with Thunderbird 60 ESR. This may change as soon as Thunderbird 60 ESR can also handle WebExtension dictionaries (planned for version 60.5).

  • changed

    Reply to self will now search all identities (default of preference mailnews.reply_to_self_check_all_ident changed to true)

  • changed

    Composition text and background colors no longer sent by default. New option in "Tools > Options, Composition".

  • fixed

    Address book search and auto-complete slowness introduced in Thunderbird 64 beta

  • fixed

    Plain text markup with * for bold, / for italics, _ for underline and | for code did not work when the enclosed text contained non-ASCII characters

  • fixed

    While composing a message, a link not removed when link location was removed in the link properties panel

  • fixed

    Decoding problems for messages with less common charsets (cp932, cp936)

  • fixed

    Spurious 
 (encoded newline) inserted into drafts and sent email

  • fixed

    Double-clicking on a word in the Write window sometimes launched the Advanced Property Editor or Link Properties dialog

  • fixed

    Editing a plaint text draft displayed the entire message as quote (in blue)

  • fixed

    New messages in the drafts folder (and other special or virtual folders) will no longer be included in the new messages notification

  • fixed

    Edit > Undo didn't undo moving or deleting of messages

  • fixed

    Improvements of SMTP 5.7.1 message

Beta 2

  • new

    Thunderbird now allows the addition of OpenSearch search engines from a local XML file using a minimal user inferface: [+] button to select a file an add, [-] to remove.

  • new

    During account creation, Thunderbird will now detect servers using the Microsoft Exchange protocol. It will offer the installation of a 3rd party add-on (Owl) which supports that protocol.

  • fixed

    Account creation sometimes shows an error: "Programming bug. Assertion failed, see log"

  • fixed

    Chat: Participants not sorted (not working since Thunderbird 63 beta)

Beta 3

  • new

    More search engines: Google and DuckDuckGo available by default

  • fixed

    Crash when using "Send to > Mail recipient" on Windows under some circumstances (MAPI interface)

Beta 4

  • fixed

    Full Unicode support for MAPI interfaces: New support for MAPISendMailW, UTF-8 support for MAPISendMail

  • fixed

    Chat: Participants not sorted (follow-up)

  • fixed

    Calendar print preview not working

  • fixed

    CalDav access to some servers not working

Known Issues

  • unresolved

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

  • unresolved

    Spellcheck marks disappeared erroneously for words with an apostrophe (working in Thunderbird ESR)

  • 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.

  • unresolved

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