Grader-rubrics: the "0" cell is automatically highlighted when opening an ungraded or graded rubric

Create a rubric Create an assignment and attach the rubric Have a couple of students submit the assignment As the instructor, grade the assignment using the grader Click on the first student's name and click on the rubric icon Expected: no cells should be highlighted at this point Grade the rubric, then save and release to the student Grade the next student Go back to the first student and open the rubric Expected: only the selected cells should be highlighted Current: selected cells are highlighted, but so is the first "0" cell