eager loading with default scopes

I'm seeing this behavior in mongoid 3 when using eager loading with default scopes. I'm not sure if it's a bug or by design.

Simple example:

class Person

  include Mongoid::Document

  field :name

  has_many :hobbies

end

class Hobby

  include Mongoid::Document

  field :name

  field :status

  belongs_to :person

  default_scope where(:status.ne => 'deleted')

end

After creating a person and two hobbies, one of them with status = 'deleted', person = Person.includes(:hobbies).first correctly performs the eager load query (including the default scope), but then person.hobbies hits the database again. Removing the default scope causes it to work as expected.