The link for adding descriptions to triggers created by low-level discovery has been removed from Monitoring → Triggers. Such descriptions were later deleted anyway by low-level discovery, if they were not present in the original trigger prototype.
Daemon changes
Active agent auto-registration events are not generated any more if there is no action for auto registration.
Miscellaneous changes
Zabbix server and frontend now try to set the MySQL autocommit variable to "autocommit=1" (enable MySQL autocommit mode) at the beginning of each connection to the database. Failing to do so results in failed database connection.