I am getting a lot of DB errors (see https://forum.osticket.com/d/94121-db-error-1064) and I'm thinking it might have something to do with the saved searches from before the upgrade. But the reason for this because there is no way to modify or remove these saved searches.
Server Information
osTicket Version v1.12 (a076918)
Web Server Software Apache/2.4.29 (Ubuntu)
MySQL Version 5.7.26
PHP Version 7.2.17-0ubuntu0.18.04.1