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Join UsVersion 122.0beta, first offered to channel users on December 20, 2023
Removed "mail.openpgp.key_assistant.enable" preference
Activity Manager now shows account and full folder path when indexing
When starting Thunderbird, unread message count did not appear on collapsed accounts
Thunderbird "--chrome" flag incorrectly opened extra messenger.xhtml
Thunderbird "--migration" flag opened empty window
Some menu bar items did not work with all Thunderbird windows closed on macOS
Add-ons did not start correctly when opening Thunderbird from other programs
Thread tree did not update when live language switching
Double-clicking empty space in message pane incorrectly opened the currently selected message
Card View behavioral and visual improvements
Sort order was sometimes incorrect in Grouped By views
Enabling Grouped By view after reversing sort order of column header caused messages to be grouped incorrectly
Contacts deleted from mailing list view still visible in Details view
Adding duplicate mail addresses in "New/Edit mailing list" dialog, pressing OK, then removing one of the duplicate addresses causes both addresses to be removed
Canceling SMTP send before progress reached 100% did not stop message from sending
Various S/MIME improvements
PDF attachments open in a separate tab did not always restore correctly after restarting Thunderbird
Drag-and-drop installation of add-ons did not work if Add-ons Manager was opened from Unified Toolbar
Opening thread pane context menu via keyboard did not always scroll view to selection
After selecting contacts in Address Book and starting a new search, the search results list did not update
Message List display options were hidden outside of Thunderbird window
Chat Account Settings did not allow scrolling to view overflowed window contents
Various visual improvements
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Newsgroups did not always prompt for password, preventing download of list of groups
New mail indicator for POP3 accounts did not indicate new messages ready to be downloaded
Messages could not be moved to folders using Message > Move To if text or a link in the message had been clicked on first
Some OpenPGP dialogs were too small for their contents
Account Manager did not work with hostnames entered as punycode
Blank window was sometimes displayed when starting Thunderbird
Reversing sort order of Grouped By views in quick search did not reverse
Size of collapsed folders in folder pane did not include size of subfolders
Switching to thread pane of a folder using keyboard navigation did not focus top message
Removing threaded messages in a unified folder sometimes resulted in an incorrect number of levels in the thread
Inbox view intermittently reverted to default view after moving or deleting messages