When viewing and grading all submissions for an assignment, the Grade button for each row (the green checkmark box) returns the grading page for the wrong student. The top button in the list (at row 0) attempts to grade row -1, resulting in the following error:

"Coding error detected, it must be fixed by a programmer: Row is out of bounds for the current grading table: -1"

For the other boxes in the list, the grade button takes the user to the grading page for the student immediately above them in the list. For example, if John Smith is immediately above John Doe in the list of submissions, clicking John Doe's grade button yield's John Smith's grading page.

This issue also prevents the last student in the list from being graded.