Hello @BStutzman
Thanks for posting this in the Canvas Community!
I understand that you are seeing an odd behavior with students viewing Rubric criteria prior to submitting on the Canvas student app.
I tested this on my end and also saw the same behavior with the iOS student app! It might be worth reaching out to Canvas support to see if they have identified any known issues related to this behavior. They might need a link to the assignment where the behavior is occurring and an example of a student who has not submitted to the assignment yet.
Let us know what you find out on this!
-Colton