Cross-Shard users are unable to submit files to group assignments when Assignment Enhancements are enabled


This behavior has been resolved and deployed to the production environment as of 11/16/23


When a student from a trust instance attempts to upload a file to a group assignment with Assignment Enhancements enabled, they get the error "Error updating submission draft”.

Expected Behavior

They should instead be able to upload file submissions to group assignments


No workaround exists at this time.

Steps to Reproduce

Prerequisites: In a trust, have a course in Instance B that has a cross-shard student enrollment from Instance A. Enable Assignment Enhancements in Instance B. Have the student added to a group on the people page.

  1. Create a group assignment and enable file uploads.

  2. As a cross-shard student access the assignment.

  3. Select Upload.

  4. Attempt to upload a file.

  5. Note that the submission does not go through and it stays on the page where you are meant to submit the file.

Additional Info


Known issues indicate notable behaviors that has been escalated to the Canvas engineering team. Known issues are not a guarantee for an immediate resolution. This document is for informational purposes only and does not replace the Support process. If you are encountering the behavior outlined in this document, please ensure you have submitted a Support case (per your institution's escalation process) so Canvas Support can adequately gauge the overall customer impact and prioritize appropriately.

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