Summary:

The limit section privileges on a TeacherEnrollment for a course is overwritten when observing a student in the same course but different section. Even when the student's enrollment has limit section privileges.

Steps to reproduce:

1. Enroll a teacher in a section of course with limit section privileges set to true
2. Enroll a student in a different section of the same course with limit section privileges set to true
3. Set up the teacher as an observer of the student (for example the teacher teaches a section of a course but has a son or daughter taking a different section of the same course)
4. Confirm the teacher can now view all sections

Expected behavior:

The teacher can observer the student and only see their enrolled section

Actual behavior:

Teacher is no longer limited to section and can see all sections.

Additional notes: