Case: Students get an assignment. Students get two attempts. Second attempt can be  manually given by the teacher to students who did not get a passing grade (not automatically, because only students that have reached a certain threshold get the second attempt)
 
Student submits the first assignment attempt, it is graded and feedback is written but workflow status remains "being graded" (or any other status that is not the "released" status).

Student who gets a passing grade or who does not reach the threshold does not get a second attempt. Student that reached the threshold but got no passing grade gets the second attempt (manually by teacher).
 
But alas, to the latter type of student (to whom the second attempt is given), the feedback and grade IS released and visible in the assignment even though the workflow has not been set toe "released" yet.
 
We need to first set up all feedback and all grades to all students, and then release them all together at the same moment. But with the worklfow in combo with a second manual attempt, it is not behaving correctly..
 
In smmary; the wrong behaviour is:
 

• Students submits work
• Teacher starts grading and giving feedback, but releasing nothing
• Teacher grading opens up a new attempt for some students but not for others
• At that time, the first attempt is immediately released to the student (even if the marking workflow is not set to released yet)