Replacing file breaks preview for discussion/announcements

Issue Documented: 2024-10-22
Canvas

This behavior has been resolved and deployed to the production environment as of 4/9/25.

Description

When a file is attached to a discussion or announcement if you then you replace the file with a new version the file preview on the discussion/announcement is not updated.

  • Downloading the file works, but clicking the link to the preview will fail.

Expected Behavior

Replacing a file shouldn’t cause the previews to break

Workaround

No workaround exists at this time.

Steps to Reproduce

  1. Upload a file

  2. Link the file in a discussion or attachment

  3. Reupload the file and choose the ‘replace’ option

  4. Navigate back to the discussion or announcement and try to preview the file

  5. Notice it will fail

  6. Open the file in a new tab and notice it loads

Additional Info

RCX-2572

Known issues indicate notable behaviors that have 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.