student, I am able to start an assignment. If I choose 'save draft' to save and finish up later, it does indicate back in the main assignments window that my assignment is "in progress" (as seen in screen shot-01). However, when I go back into the assignment to finish and submit, I get a read-only screen of the assignment with a done button at the bottom of the screen (see in screenshot-02). There is no way to finish the assignment and submit it. Also note inscreenshot-02 that the submitted date looks like some piece of programming code??
I tested this in production and nightly 2. Both have the same outcome.