In the student's grade report view (when a student is checking his Assignment grade), they can see an empty 'Feedback' column.
As a teacher, we can add 'Feedback comments' and 'Feedback files', but what is the 'Feedback'?
Of course, a teacher can simply hide the 'no-meaning and useless' column in the Teacher's User report setting page.
I am still curious to know what the column for? ---Because students asked me
I tested in Moodle 3X.