In the Course Activity Report, there is a Course column. One would expect this field to show the course title but, instead it populates with an the course ID.
I've had to populate 'external ID' with the course name in order for the actual title to appear in the report.
To add on to this, the various learner focused reports should have a column with course name. The ILC report doesn't have the course column option either. And inexplicably, the 'external id' workaround indicated above does not work.