Why sometimes a student can't see their feedback with multiple attempts

When a student checks their grade on an assignment where there has been more than one attempt. The grade will show, but instead of feedback they will see which attempt they are currently seeing the results of. They should choose the one that has the grade.

Usually the one with the grade is the most current attempt, and will be the one that will load by default, making this a non-issue. But when the first one is graded and the second one is not, then they must change it to the first in order to see the results