There are no Attachments in the Email, however the attachment does show on the List itself.
First, check how the Workflow is being started.
If it is being started by a SharePoint event (Item added, updated, etc.), you should not have to worry about this. Just make sure that the Attachments Item Reference exists.
If it is started by SmartForm rule:
Check that the Item Reference for the Attachments is being added in the Start a Workflow rule.