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Join UsVersion 91.1.1, first offered to channel users on September 16, 2021
Menu item for disabling subject encryption for a single message added
Printing messages that are not currently displayed is no longer supported, including printing multiple messages at once
Buttons on compose window dialogs did not have a visual indication of focus
Dropdown fields in message compose window were unreadable on Windows 7 with a dark theme
Multiple bulk mail notification warnings were displayed
Enabled/Disabled state of message filters did not persist as expected
Printing a message did not print a list of its attachments
Images attached from a web page were not sent as expected
OpenPGP public key was attached multiple times when forwading a message
Windows tray icon disappeared if Thunderbird was started by a shortcut with "Run" set to "Minimized"
Windows tray message count badge displayed the "unread" count instead of the "new" message count
Some downstream Thunderbird builds were incorrectly checking addons for a signature, causing all addons to be disabled
Addressbooks set up with autoconfig showed no search results
Various CardDAV setup and auto-detection fixes
Dates (such as birthday) stored in contacts may display the wrong date; a one-time manual fix may be needed for dates that are incorrect.
Attached VCards displayed as plain text when an email was HTML formatted
Mailing list names with non-ASCII characters incorrectly displayed with an error
LDAP directories were not searched for matches when adding recipients to an email
Clicking "Connect to an LDAP address book" in account setup opened CardDAV setup dialog
LDAP address books using Kerberos/GSS-API authentication did not authenticate
LDAP search queries containing non-ASCII characters produced no results
IRC server connections did not automatically retry after a timeout
Calendar event editor did not honor mail.spellcheck.inline