I have astrange problem related to cohorts: I have student A who is in cohort B. Lots of courses use cohort sync to get their members from this cohort. All students in cohort B see their correct courses except student A. Student A only sees one particular course. I have double checked that there are no duplicate accounts with the same name. I have tried removing him from the cohort and then adding him again. Nothing seems to help.
Am I missing something?