Clicking on attachment name calls the dirt_form popup although the form remains the same 

1. Open any type of record that contains an attachment.
2. Add text to any field (do not save) 
3. Click on the name of the attachment to open it (see attachment)

Actual behavior:

Receive warning message saying "Are you sure you want to leave this page?"

Expected behavior: 

Attachment gets displayed without the warning message

After carefully considering the severity and frequency of the issue, and risk of attempting a fix, it has been decided not to address this issue. We do not make this decision lightly, and we apologize for any inconvenience. If you have any questions regarding this problem, contact ServiceNow Customer Support.