This isn't a loss of functionality or a critical problem, but it is very visible.
The short answer question type includes a "model short answer" feedback field. If you publish an assessment with a short answer question but don't put anything in that field, then students taking the assessment will still see the "Model short answer - click here" link in delivery. If they click on the link, it'll just refresh the page.
When you grade the assessment, you'll also see the "Model short answer-click here" link. If you click on it, it'll either refresh the page (MIT stable instances) or bring up a blank pop-up window (local instances).