I searched in the forum and on the internet but didn´t find a report describing this problem.
I think I found a bug in the assigment when files are uploaded an the button "Require students click submit button" is enabled in the setting. If a student submits a file and clicks the button and a teacher resets this with "Revert back to Draft" and the students submits a second time, an Mail that he was graded is sent to the student. After submitting the first time, the student get a mail that he submitted something in the assigment, which is ok. But when submitting a second time after a teacher reverted the assignment back to draft, he get a mail that he was graded, even if there is now grade or comment.
Has anybody else encounterd this problem? Is there already a bug reported?