Email entry in activity formatter turns blank after clicking link to record from email displayed in entry

In certain circumstances, clicking a link in an email displayed in activity formatter causes the email box to go blank and the link to not resolve.

1. Create an Email Notification for a record (for example, Incident) that includes a link to the record in the body of the email.
2. Perform an action in the record to trigger the notification.
3. View your original record outside of the frameset.
4. Expand the Sent Email box in the Activity Formatter to preview.
5. Click the link to the record from the email preview.
   The email preview in the Activity Formatter shows as blank and the link appears to not load.

The problem is being investigated. You can subscribe to this known error article (click Subscribe button at the top of the article) to receive notifications when more information is available about this issue.