[German]The developers of Thunderbird have released another update of the email client to version 115.5.2 on December 11, 2023. It is an update that is intended to fix some bugs.
Thunderbird 115.5.2
According to the release notes the update to version 115.5.2 brings the following bug fixes – the length of the list makes my head spin:
- "Compact" option was missing from folder context menu for IMAP accounts using maildir
- Message list could not be properly read by screen readers in table view
- Messages with slow-loading images were delayed being marked as read
- Messages opened in background tab were incorrectly marked as read
- Mark All Read did not work for virtual folders
- Delete (trash icon) in message display did not work in Unified folders
- Unified folders were missing "Mark Folder Read" option in context menu
- "Reply to List" was incorrectly disabled in Unified Toolbar since Thunderbird 115.4.1
- Sorting by column with "Grouped By" enabled then performing a quick filter search caused blank message pane
- Attachment list did not always appear if remote message content loaded slowly
- Messages in outbox were not shown as unread by default
- "Apply columns to" sometimes failed to apply columns to a root folder and its descendants
- Global search results displayed as a list did not allow threads to be collapsed
- "Quick Filter" button on toolbar was disabled when viewing search results as a list
- Folder open hover delay was too short when using drag-and-drop
- Parent folders with collapsed subfolders did not consistently display new mail indicator or message count for subfolders
- Message list scroll position could move randomly when switching folders
- Undoing deletion of local messages required using "Undo" (Ctrl-Z) twice
- IMAP messages deleted in Thunderbird still appeared in other email clients that don't respect messages marked "\deleted"
- IMAP folder discovery was slowed by status bar message updates
- Servers with non-LDH (letters-digits-hyphens) hostnames, such as those containing non-ASCII Unicode characters, could not be found
- Images could not be copied and pasted from one message into another
- Troubleshooting page (about:support) did not work on profiles with no outgoing email server, such as news-only profiles
- Minimize/maximize button order was incorrect when placing window title bar buttons on left-hand side
- OpenPGP integraton with smartcard using latest version of Gpg4Win failed
In addition, various accessibility improvements as well as various UX and visual improvements are said to have been made. The system requirements for the different operating system versions (see here for more details):
- Windows: Windows 7 or higher
- Mac: Mac OS X 10.12 or higher
- Linux: GTK+ 3.14 or higher


