Conflict with LearnDash

In Learndash when you build a course, you build lessons and topics that you assign to display inside a course. Inside the course there is a builder where you click and drag the lessons and topics around in the order you want them to display. As soon as you install the Post Types Order plugin the order of lessons randomly changes or resets itself in certain courses.

To fix is disabling auto sort option to off in Post Types Order settings.