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  1. Moodle
  2. MDL-68811

Assignment : blank or wrong display in PDF annotator for documents annotated outside Moodle


    • Icon: Bug Bug
    • Resolution: Duplicate
    • Icon: Minor Minor
    • None
    • 3.7.6, 3.9
    • Assignment

      When a student uploads a PDF document which has been annotated outside Moodle (e.g. with MS Edge or Drawboard PDF), Moodle's built-in PDF annotator sometimes displays a blank page (Moodle 3.7), sometimes the original document without annotations by the student (Moodle 3.9).

      To reproduce, you can use the attached document annotated_pdf.pdf, which was annotated with MS Edge (you can open it with a PDF reader it to verify that it contains annotations) :

      1. create an assignment with "File submissions" as submission type
      2. as a student, submit the attached document
      3. as a teacher, verify in the pdf annotating page that the submission is blank or doesn't contain the student's annotations.

      This can lead to serious problems, especially now that tablets/convertibles with touch screens become more common. Consider an assignment where the teacher asks the students to annotate a specific document on their computers, and to upload it back into Moodle. if the submission displays blank, the teacher might infer that there is a problem with the pdf file. But if the document appears without the student's annotations, the teacher might just think that the student has not done his/her work.

      Currently, the workarounds are :



            Unassigned Unassigned
            monnardj Jacques Monnard
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            7 Start watching this issue


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