Overlay preview of embedded file fails to load after replacing the original file

InstContentTeam

This behavior has been resolved and deployed to the production environment as of 7/1/26.

Summary:

When a file is uploaded to a course, embedded in a page, then updated locally and replaced, the embed still points to the original file’s ID, When choosing to {{preview inline}}, the preview behaves as expected, however when using {{preview in overlay}}, the request returns a 404.

Expected Behavior:

Users should be able to view the updated file

Workaround:

• Re-embedding the correct file
• For users attempting to view the file, the download button still works and downloads the file so that it can be viewed locally

Steps to Reproduce:

1. Create a file locally (e.g. a simple .txt)
2. Create a Course
3. Create a Page
4. Upload and embed the file you’ve created on the page, set it to {{Preview in overlay}}. Click Save and Publish
   1. Take note of the file’s id in the embed
5. Update the file locally (add/remove anything in the file)
6. Upload the updated file and replace the old one
7. Attempt to open the file’s preview on the page
   1. Observe the error
   2. Note that the file’s id has not changed