Bug? Author Name not treated the same if entered inverted

West, M. L. 

and

M. L. West

apparently aren’t recognized by EN as the same author. In the Bib output, they appear as two names, not as one duplicated author (eg, with a ___________. before the second instance). I realized this only when I confronted the error, and had to make them exactly identical to get them to conform in the Bib.