This bug was resolved on 5/12/16 during an update of the site by AN-1267
The development team has completed the first step in resolving this across the site by identifying all profiles affected. Next step will be to remove all duplications found to correct profiles.
The cause of this issue has been resolved, but the profiles which are experiencing this issue must be corrected by the development team. Please submit all instances of this error to firstname.lastname@example.org.
If a duplication does occur while you are editing your profile, please contact us with as much information as possible on what you were doing when the issue occurred.