Course is marked as completed when conditions are not met for passing grade

You can use attached course for testing. Or setup from scratch:

1. Create a course
2. Enable completion tracking
3. Create a quiz
4. Add a multiple choice question with some options. I.e. option 1 gives 100%, 2 - 75 %, 3 - 50%
5. In activity settings set grade to pass to 7.5
6. In activity settings set completion as 'Student must receive a grade to complete this activity' and 'Student must receive a passing grade to complete this activity'
7. In course completion settings in 'Condition: Activity completion' section check your quiz and save changes
8. Login as student and complete quiz (select option 3 which gives you 50% so activity is not completed)
9. Run cron
   Expected: Course is not marked as completed on my courses page, no email is sent to student about course completion, quiz condition 'Receive a passing grade' is marked red on course page
   Actual: Course is marked as completed on my courses page, student received email about course completion, quiz condition 'Receive a passing grade' is marked red on course page