• Infolog: Fix details / no details filter preference was not saved
• Notifications: fix notification sub messages (grouped entries) would still show up even though their parent message once been deleted
• CalDAV/Calendar: fix weekly recurring events without explicit weekday (BYDAY) were not using start-date
• CalDAV/Calendar: participants without status were not imported for new events (eg. from Thunderbird)
• Calendar: New context menu action to manually [re]send notifications
• Calendar: Make resources stand out more in conflict list
• Calendar: Fix timespan in tooltip was wrong if event had seconds in start or end time
• Calendar: Fix alarm for all users had wrong timezone when user timezone was not server timezone
• Calendar: Fix event notifications had the wrong times in iCal attachment if user timezone was not server timezone
• Addressbook: Fix missing distribution lists
• Timesheet: Fix created time was wrong in user timezone was not the same as server timezone
• Preferences: Fix deleting multiple categories only removed the first
• RocketChat: Fix unread messages no longer get updated
• Status/Videoconference: fix screen sharing in videoconference dialog not working on Firefox
• Status/Videoconference: fix attempting to join a call event before it is created by its moderator resets the counter
• Tracker: Offer "Multiple changes" action to tracker admins
• EPL/mail: support SpamTitan REST API to manage spam, requires an API token
• FPM/Container: start more php processes by default and keep them running to better cope with high usage
• PHP: Support for PHP 7.4 (container of this maintenance release still uses 7.3)