I'm having a strange issue with a client site - When someone fills out a form on the front end and Untitled Draft post appears in the posts. The form in question has no Post Fields, although there is a separate form that does.
Caveat: The client hired a third party dev team to 'edit' Gravity Forms to allow for partial entries to be recorded in the database on multi page forms. The issue began before they changed it however.
Since the plugin has been edited I understand if there is simply no help here... If you'd like to take a look at how they got partial entries into the database I'd be happy to grant you access though.