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Join UsVersion 115.2.3, first offered to channel users on September 20, 2023
Card view and vertical layout are now default for new profiles
Go > Folder menu was disabled
"Tools" menu was blank when opened from compose window on macOS
Deleting an attachment from a message on an IMAP server corrupted the local copy when configured with "mark as deleted"
Manually entered passwords were not remembered for OAuth-authenticated accounts such as Yahoo mail
Quick Filter's "Keep filters applied" did not persist after restarting Thunderbird
Top-level Quick Filter settings did not persist after restart
Notifications for new messages with non-ASCII characters in the subject were garbled
"Mark Thread As Read" did not work when some messages in thread were already read
New Groups tab in NNTP subscribe dialog id not work as expected
Negative values were allowed in "Share for files larger than" field
Thunderbird sometimes crashed when deleting a parent folder with subfolders
"Send Message Error" appeared intermittently while Thunderbird was idle
Focused but not selected messages were missing visual indication of focus in card view
Notification dot did not disappear from taskbar icon on Windows after messages had already been read
Multiple selected messages could not be opened simultaneously if selection included more than 19 messages
Email replies received via BCC incorrectly populated From field with default identity
User was not always notified of message send failures in outbox
Tag dialog did not close properly after editing tag
Newsgroup field in compose window did not autocomplete with suggested newsgroup names
Canceling newsgroup messages did not check if sender matched user's own identity
Event dialog with several invitees expanded beyond screen height
Message check boxes were partially obstructed in message list
Some folders missing from Unified Folders