Clean and boost: setting for "Show my courses expanded" is gone

The setting "Show my courses expanded" is gone, and now all the user's courses is shown when using Clean theme. For users with a lot of courses, like teachers and long-time students, this is very annoying.

To replicate, in v 3.2.1 with Clean theme

1. Admin section, search for navexpandmycourses and get no result.
2. In a Corse room, see My Courses expanded in navigation menu