What’s New
• Add "Show Full Path" folder pane option for compact view modes
• Add `mail.useLocalizedFolderNames' to toggle special folder name localization
What’s Changed
• Special folders are now localized based on a restricted set of names
What’s Fixed
• Selected status and priority was not displayed in search widgets
• Compacting multiple folders failed and did not compact
• Resetting manual folder sorting did not work for sub folders
• Unified archive subfolders could show wrong names and no messages
• Folders with deep hierarchy and long folder names could fail to display
• Moving saved search/virtual folder under IMAP could fail
• "Open and Show" for OpenPGP-signed message (.eml) did not work
• "Search Messages" search did not finish due to unparsable local folders
• Compose command line flag no longer worked correctly
• Search for "Attachment" in Settings menu did not find "Files and Attachments"
• Account Hub did not show error message on failure when creating OAuth2 EWS account
• Thunderbird could crash during exchange address account setup
• Japanese locale users could not create message filters
• Moving virtual folder within maildir based IMAP or local folder could fail
• Thunderbird could crash when marking all messages as read
• Startup could be slow with large number of folders not using subscriptions
• EWS message send that required a password errored instead of prompting
• EWS HTTP 500 backoff errors were not handled gracefully
• SMTP sending could hang when when multiple messages queued for sending
• Thunderbird could crash when emptying EWS trash
• Broken feed icon could prevent updating of feeds
• Calendar did not alert user for connection issues
• Creation of tasks with Start or Due date was not possible
• Visual and UX improvements
• Security fixes