How Turnitin should work:
If a Turnitin assignment has been set to anonymous marking and no submissions have been made it should be possible to edit (further extend) the Post Date of an assignment and keep the assignment anonymous.
There seems to be instances where the above is not the case. Though the assignments appear anonymous in the first instance if you choose to extend the Post Date by editing it, once a student makes a submission, their name is revealed and all other names appear anonymous. Even though the ‘new’ Post Date has not passed. This seems to happen ONLY in cases where the assignment settings have been edited in the assignment inbox via the pencil icon (image 1). We have reported the issue to Turnitin and they are investigating this as a matter of urgency.
Workaround and actions to take if you would like to update the assignment Post Date:
SCENARIO 1: No submission(s) has been made to the assignment and the Post Date has passed:
Edit/update the Post Date and any other dates within the Edit settings page of the assignment as necessary - Turn editing on > Navigate to the relevant assignment > Edit > Edit settings > Edit the relevant dates (image 2) > Save and display
SCENARIO 2: The Post Date has NOT passed and is correct, a submission has been made and the name of the student(s) who made a submission has been revealed. Other student names in the submission inbox remain anonymous, however as each student submits their name is also revealed.
A new submission inbox will need to be created.
SCENARIO 3: The Post Date seems correct, no submissions have been made BUT you may have edited the P ost D ate within the assignment inbox screen via the pencil icon (image 1)
Turn editing on >Navigate to the relevant assignment > Edit > Edit settings > Save and display. This will ensure that the Post date is updated correctly.
Image 1 - assignment inbox
Image 2 - edit settings
Turnitin are currently aware of this issue. As of August 2020, they recommend the same work in as provided above. For updates see Turnitin's known issues for Moodle page.