If a student submits an assignment, it shows in the block. If the student didn't do well and the teacher gives the student a 0 while clicking on "Reverted the submission to draft". This gives the student another chance to do better. If the student submits another assignment. It doesn't not show up in the block.

Thanks for the help

We are on Moodle Version 2.5.3+ (2.5.5 was the only other option under Affects Version)