We are experiencing an intermittent issue when grading assignments (Moodle 2.9.1) where occasionally on the grading page the feedback shown for the student is from another student. See the attached screenshot where Daniel's work is being marked but the feedback is for Kai. When I saw this myself in person I refreshed the browser and it went back to the correct student.
I haven't found a way to replicate this wrong feedback showing problem, it seems random at the moment.
Any help appreciated