Why do constituent records display both individuals if they are separated?

This article pertains to Development 3.

The system refers to the relationship type displayed on the Related People tab of individual person records and will only separate the constituent records if this is set to "Ex-Wife" or "Ex-Husband." If the individuals have a marital status of "Separated" on the General tab and have their own household records but their Relationship Type is "Wife," "Husband," or "Spouse" the system will not separate the constituent record.