Use case

We use quizzes by group and/or grouping in our sites. And we want to know which people in the groups have not completed the quiz.

Steps to reproduce bug

1. Login to https://qa.moodle.net/ as teacher/test
2. Go to course with students/quizzes (https://qa.moodle.net/course/view.php?id=2)
3. Create groups Participants > Groups > Auto-create groups
4. Create groups with 5 people each group, this will create two groups with 5 students
5. Go to quiz and edit settings (https://qa.moodle.net/course/view.php?id=2#section-9)
6. Go to Restrict access and add a restriction that students must match a group you created in step 4. Save changes
7. Click on Attempts for the quiz
8. Change "Attempts from" to "enrolled users who have not attempted the quiz" and click "Show report"
9. Expect to see only students from the group I restricted access, instead I see everyone in the course.