Always expose with the default entity

I'm using grape and grape-entity in a Rails 4.2.1 project, and I'm running into a weird error with presenting using the right model.

According to the documentation, organizing my entities within each model results in this:

Grape will automatically detect the Entity class and use it to present your models.

In addition, the documentation also says:

By default every object of a collection is wrapped into an instance of your Entity class.

Here's the code I have now.

class User < ActiveRecord::Base
  class Entity < Grape::Entity
    expose :id, :name
    expose :addresses
  end
end

class Address < ActiveRecord::Base
  class Entity < Grape::Entity
    expose :id, :street1
  end
end

If I don't do expose :addresses, with: Address:Entity, it doesn't work, and still exposes all the fields of the address. Any reason it's not automatically detecting the correct entity?

Start with the entity-organization documentation and the nested User::Entity and Address::Entity example in the issue. Reproduce the collection presentation with and without expose :addresses, with: Address::Entity, then trace how the default entity is selected. Done means the behavior is explained and the nested address uses the intended entity, with a regression test if the repository has coverage for this path.