dears,
i'm facing a strange problem with our new moodle 3.5, we was working with moodle 2.7 and now we imagrate to 3.5 the problem that the grades of quiz not shown in the grade book as you can see in my screen shot below, one for gradebook shows the student got zero on the other hand when i open the quiz itself i found that the student already attend the quiz ad got 80%.
also note that i set up a passing score to the quiz, and set also the Grade category to be Simple weighted mean of grades.