So, I noticed that osTicket prefers to show dates for due dates and certain other fields as “human readable” dates. It displays something like Due in 2 days instead of 3/2/21 14:30 which was what I preferred; so they were the same as all the other dates. Sorting on these fields was often unreliable and the various phrases broke table displays and generally drove my OCD bonkers. Unfortunately, there is no way to change how these dates were displayed in the settings. So, I had to dig into the code.