Teachers are included in "Not Submitted" list

[senaiboy]

We are encountering an issue where when we open Marking Manager and view those who have not submitted, even teachers are included in the list.

When viewing the "Student List" (via the link on the Marking Manager block), teachers are not included.

Not sure if it's of relevance, but we have edited the default moodle roles (a different role was renamed to students, but the default teachers role are unchanged)