Pin/Comments on attachments displaying as anonymous

Issue Summary

In Confluence, when the user comments on an file in order to trigger a notification, this will be displayed as an action made by an anonymous user, instead of the current user sharing the comment.

Steps to Reproduce

1. Create a new page using the Legacy editor.
2. Attach a file to the page.
3. After publishing the page, tap the file. While on the preview mode, tap the little comment button on the bottom of it.
4. Add a new comment (good advice is to mention someone to trigger the notification in their email inbox)

Expected Results

The notification should be displayed as the user who performed it.

Actual Results

The notification displays as done by an anonymous user.

Workaround

Currently, there is no known workaround for this behavior. A workaround will be added here when available