Steps to reproduce:
- Create a course with an mod_assign instance
- Enroll a user
- View all submissions for the assignments
- In a new tab, open the user's submission, note the URL
- Change the filter on the View All Assignment page to exclude that user
- Reload the Page, the user's submission in the grader and it no longer load their assignment
This is really annoying for situations where either you have a report that generates links to the assignment grader, or you want to link a colleague to a specific submission. If the person getting linked has the submission filtered out, it can be a confusing experience.