When importing a single simple document into a collection, 2 documents are created on import: one null and the expected document. Please see the attached screesnshot.  

Importing the document from a JSON file works as expected. Both the CSV and JSON files were exported using Compass. 

The CSV file format is correct after export:

_id,name
ObjectId("5ae8903d55684b47033a86a0"),ross

There seems to be an issue on the import of the CSV file.