Question response feedback shows upload option for file upload question type

Create an assessment with a single file-upload question, with feedback set to "on submission", and "student response" selected.

As a student, take the assessment: upload a file, and submit.

Then click on "Feedback" next to the assessment under Submitted Assessments.

The question is shown along with a File: Browse | Upload widget, which is inappropriate as there's nothing to upload here (the student is not taking the assessment).