Opera (64-bit)

What's new in this version:

Changed:
- Card view and vertical layout are now default for new profiles

Fixed:
- 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
- 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
- Top-level Quick Filter settings did not persist after restart
- 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