• Setup/Filemanager: fix excess looping stalling update from before 16.1
• ProjectManager: fix "used" elements filter did not contain all not ignored elementes
• Api/Ckeditor: Update CKeditor to version v4.9.2
• Api: Fix references to sub-fields of custom field entries only merged for the first entry of each type
• Calendar: Fix notification for single event in series had original start date
• Calendar: fix not working Mail/Meetingrequest to all participants action
• Calendar: yearly planner view events would sometimes load in the next month as well
• Tracker: fix inline images from mailhandling are not getting resolved properly
• Tracker: fix inline images imported from mail get always overridden by the first inline image in the list
• Tracker: fix "delete mail from server" option in mailhandling
• Tracker: fix error Too few arguments to function tracker_bo::ajax_getTicketId(), 0 passed and exactly 1 expected, when creating new ticket out of eml file
• Tracker: Fix latest reply comment includes some html tags on it
• Admin: Exclude not supported apps from mobile's available app list
• Admin/Mail: fix saving mail-accounts for multiple accounts
• Mail: fixed equal signs (=) are not displayed in subject
• Mail: fix searching in email gives an error
• Addressbook: allow to import or paste S/Mime or PGP public keys via pubkey field into Vfs
• Addressbook: Add preference to turn off user groups as distribution lists
• Resources: fix 'Too few arguments' error when changing category of resource with accessories
• Infolog: Fix timestamper button does not work in mobile template
• Wiki: fix not working vfs: links in minimal installation
• Mail/SpamTitan: fix not working spam/ham learning and white/blacklist without API access
• EPL/SpamTitan: synchronize aliases with SpamTitan on first use of a spam function
• Collabora: do NOT check certificate for localhost or private IPs
• Calendar/Resources: fix SQL error with no responsible for a category set for Slovenian (and maybe other) translations