When the Directory loads initially, it only returns results based on the User's Profile Publish Access that is set for the Role(s) that pull into the Directory. No results are displayed because the Role(s) in the Directory do not have information set up to publish to the User's Persona Role. In order for the results to load by default without searching, The Role(s) that the Directory is pulling, would need Profile Publish Access set up for one of the User's Persona Roles.