Failed account setup left incoming servers that blocked subsequent setup attempts
As always, you’re encouraged to tell us what you think, ask for help, or file a bug in Bugzilla
]]>Dialogs had transparent backgrounds with third party themes
As always, you’re encouraged to tell us what you think, ask for help, or file a bug in Bugzilla
]]>Attach File dialog failed to open when the previously used folder was unavailable
Troubleshooting falsely reported crash reports were not configured when available
Switching to Unified Folders could leave All Folders enabled and not change view
Archived Inbox folders ignored localized names and appeared as "INBOX"
Plain-text inline forwards omitted signatures placed below the quote
As always, you’re encouraged to tell us what you think, ask for help, or file a bug in Bugzilla
]]>Quick filter responsiveness has been improved
ExtensionSettings policy installs add-ons from update_url when install_url not set
Copy Link Location only copied detached attachment filenames instead of full paths
Thunderbird could crash while performing a Body search
Attach File dialog failed to open when the previously used folder was unavailable
Troubleshooting falsely reported crash reports were not configured when available
Right-clicking inline images zoomed them instead of opening the context menu
Switching to Unified Folders could leave All Folders enabled and not change view
Archived Inbox folders ignored localized names and appeared as "INBOX"
OpenPGP key management had unlocking, handle leak, and protection state issues
OpenPGP backup password text could not be copied and context menu was transparent
Quick Filter failed to match accented names when searching without accents
Holding Ctrl+Enter could unintentionally confirm the send prompt and send duplicates
Plain-text inline forwards omitted signatures placed below the quote
Remote content exceptions without a scheme only applied to HTTP, not HTTPS
Remote content exceptions incorrectly allowed wildcard hostnames like *.example.com
Saved CalDAV/CardDAV credentials could be forgotten after restarting Thunderbird
CardDAV setup failed without prompting for a password
CardDAV address book sync failed to fetch newly added contacts
CardDAV updates could corrupt vCard REV timestamps
CardDAV discovery could fail on valid multi-status responses with mixed status codes
SMTP Kerberos authentication failed on Linux with STARTTLS
POP accounts repeatedly showed connection errors when Thunderbird started offline
Matrix SSO with Save Token disabled reopened the login flow indefinitely
RSS filtering could lose tags and stall processing of later feed items
CalDAV password prompts did not identify the username or calendar
Calendar event edits could fail with localization error in the event dialog
Updated calendar credentials were not saved from the authentication prompt
Visual and UX improvements
As always, you’re encouraged to tell us what you think, ask for help, or file a bug in Bugzilla
]]>EWS/Graph messages could crash Thunderbird when handling relative URL fragments
As always, you’re encouraged to tell us what you think, ask for help, or file a bug in Bugzilla
]]>RNP command-line utilities are no longer included with Thunderbird
As always, you’re encouraged to tell us what you think, ask for help, or file a bug in Bugzilla
]]>RNP command-line utilities are no longer included with Thunderbird
Thundermail built-in add-on updated to v2.0.16
Ctrl+Shift+K could fail to open the Quick Filter UI
Nested S/MIME signed parts could fail to render
Thunderbird could hang when waiting for IMAP server greeting during account setup
Gmail OAuth2 authentication could intermittently fail on Windows
AppUpdatePin policy did not prevent Thunderbird from updating beyond pinned version
"What's New?" linked to Release channel notes instead of ESR release notes
As always, you’re encouraged to tell us what you think, ask for help, or file a bug in Bugzilla
]]>Enterprise policy DisableChat disables Thunderbird Chat functionality
Enterprise policy DisableFileLink disables Thunderbird FileLink functionality
Preference mailnews.headers.minNumHeaders has been removed
Allow viewing remote content in OpenPGP messages encrypted with integrity protection
RNP command-line utilities are no longer included with Thunderbird
IMAP/POP manual config port field is now optional
Thundermail built-in add-on updated to v2.0.16
Ctrl+Shift+K could fail to open the Quick Filter UI
Message list could show the wrong sender for messages
Status bar could remain active and cause 100% CPU usage after activity ended
OpenPGP discovery failed to find replacement keys after a key was revoked
Valid RSA OpenPGP keys could be rejected, preventing encryption
Sent messages could silently fail to save to the IMAP Sent folder
Sending message did not fail gracefully with malformed references header
Thunderbird could hang when waiting for IMAP server greeting during account setup
Account Hub account creation could fail with malformed URI
Custom OAuth Endpoint Host incorrectly required a full URL instead of a domain
Message filters could falsely match when evaluating search term failures
CardDAV address books could fail to sync when no password prompt was needed
Yahoo emails appeared blank with MIME handlers disabled via mailnews.display.disallow_mime_handlers
Pending moves within the same IMAP account could make messages disappear
Inline images could disappear after editing and resaving drafts
SMTP OAuth2 failed when large access token exceeded command line length limit
Gmail OAuth2 authentication could intermittently fail on Windows
Exchange NTLM authentication failed when updated passwords were not saved
SMTP AUTH LOGIN could fail after username challenges and close the connection
AppUpdatePin policy did not prevent Thunderbird from updating beyond pinned version
Recurring events could appear after their configured end date
CalDAV task body could remain outdated after syncing changes from another client
CalDAV invitations could fail when accepted before the calendar synced
Visual and UX improvements
As always, you’re encouraged to tell us what you think, ask for help, or file a bug in Bugzilla
]]>Thunderbird could crash when saving a message
As always, you’re encouraged to tell us what you think, ask for help, or file a bug in Bugzilla
]]>There are no Thunderbird changes requiring release notes in this release
As always, you’re encouraged to tell us what you think, ask for help, or file a bug in Bugzilla
]]>