"You have assignments that need attention" notification is ineffective

The "You have assignments that need attention" notification seems to be perpetually present for both students and teachers, no matter what the student/teacher submits, accomplishes or grades.

For example:
-> even if a student has completed and submitted all assignments for a given course, he still gets the "You have assignments that need attention" message for the course on his home page
-> even if a teacher has graded all pending assignments for a course, he is still getting the "You have assignments that need attention" message for the course on his home page.

Related discussion here:
https://moodle.org/mod/forum/discuss.php?d=226744