Respect the capability for displaying the fullname

Setup

1. Log in as admin
2. Navigate to Users > Permissions > User policies
3. Set Full name format to "firstname"
4. Set Alternative full name format to "firstname lastname lastname"
5. Press Save changes
6. Create three new users:
   • Terry Teacher
   • Sally Student
   • Sanjeet Student
7. Create a new course
8. Enrol Terry as a teacher, and Sally/Sanjeet as students, in the new course
9. Navigate to course participants
10. Select Permissions from the Actions menu
11. In the Advanced role override select Teacher
12. Prohibit the Always see full names of users capability

Test

1. Log in as Terry Teacher
2. Navigate to previously created course
3. Press Participants
4. Select Groups from the Actions menu
5. Press Create group
6. Give it a name and press Save changes
7. Select the group and press Add/remove users
8. Confirm that Potential members only displays the users' first name
9. Add Sally/Sanjeet to your new group
10. Confirm that Group members only displays the users' first name
11. Press Back to groups
12. Confirm that Members of: [your group]) only displays users' first name
13. Press Auto-create groups
14. Set Group/member count to 2
15. Set Select members with role to All
16. Press Preview
17. Confirm that Groups preview only displays the users' first name