This issue needs to be tested in Android and iOS. Test in 3.9 or older In a 3.9 or older Moodle site, create a quiz. In the quiz, add 2 essay questions: One that allows attachments. One that doesn't allow attachments and the response format is "HTML editor with file picker". In web as student, attempt the quiz. In the question with HTML and file picker, add an image to the answer. Click finish attempt, but don't submit it, just leave the quiz. In the app as the same student, continue the attempt. Check that the question with attachments displays a warning saying that attachments aren't supported in the site. Check that the question with the embedded image displays a warning saying that editing embedded files isn't supported in the site. Test in a site with all blocker issues integrated Create a quiz with several essay questions with different configurations regarding "Response format", "Allow attachments", "Require attachments" and "Accepted file types". There is one already created in "Master > MM Dev Testing > Quiz > Quiz with essays ".  In web as student, attempt the quiz. In a question with HTML and file picker, add an image to the answer. Click finish attempt, but don't submit it, just leave the quiz. In the app as the same student, continue the attempt. Check that you no longer see warnings saying that attachments/embedded files aren't supported in the site. Check that you can add or remove attachments from questions that allow it and data is saved fine. Check that you can only upload files of the specified types if a question is configured to accept only certain types. Check that you cannot add more assignments than the max specified. Check that you can add/edit text in questions that have embedded files and, after saving the data, the images are still seen. Unfortunately you cannot add or edit files yet. Now repeat the tests but with a quiz that is configured to be attempted in offline (you can duplicate the quiz and change the setting). There is one already created in "Master > MM Dev Testing > Quiz > OFFLINE: Quiz with essays ".  Test calculated questions Even if the issue is about essays, one of the changes in MDL allows us to improve how calculated questions work. In the app, login to master site and open "MM Dev Testing course > Quiz >  OFFLINE Numerical question with the units-option ". Check that the units are rendered as it should in each question. For each question, add some text but no unit and go to the summary page (before submitting the quiz). Check that the questions with required units are marked as "Incomplete answer" and the rest are marked as "Answer saved".