Part of "Attachment Name" field under Spam quarantine has been cut off from display after SMG has been upgraded to 10.5.1.
The webpage code is not written properly to display all the fields under Message Audit log.
Symantec is aware of this issue and it is not necessary to log a support case on this issue. Please subscribe to this article to be notified of any updates.
Adjust the "zoom" settings on the browser in order to display the "Other recipients" field.