I did not attempt the quiz as "Admin logged in as student" ... I just logged in as them, so I could see the students attempt.
The student attempted and passed the quiz, but it is not in the grade report and it shows as zero (well blank actually, not even 0). There are a few other students where the same thing has happened. Most students are fine... they take the quiz and it shows up. But there are a few that it does not record properly.