Bug in SC.Record or SC.Store

gistfile1.js

// ==========================================================================
// Project:   RecordBug
// Copyright: @2011 My Company, Inc.
// ==========================================================================
/*globals RecordBug */

RecordBug = SC.Application.create({
  store: SC.Store.create().from(SC.Record.fixtures)
});


RecordBug.Person = SC.Record.extend({
  name: SC.Record.attr(String)
});

RecordBug.Friend = RecordBug.Person.extend({
  nickname: SC.Record.attr(String)
});

RecordBug.Client = RecordBug.Person.extend({
  company: SC.Record.attr(String)
});

RecordBug.Friend.FIXTURES = [
  { guid: 1,
    name: "Lorem",
    nickname: "this"
  },
  { guid: 2,
    name: "Ipsum",
    nickname: "is"
  },
  { guid: 3,
    name: "Dolor",
    nickname: "an example"
  }
];

RecordBug.Client.FIXTURES = [
  { guid: 1,
    name: "Lorem",
    company: "this"
  },
  { guid: 2,
    name: "Ipsum",
    company: "is"
  },
  { guid: 3,
    name: "Dolor",
    company: "an example"
  }
];

SC.ready(function() {
  RecordBug.mainPane = SC.TemplatePane.append({
    layerId: 'record_bug',
    templateName: 'record_bug'
  });
  
  var before = RecordBug.store.find(RecordBug.Person);
  SC.Logger.log('before: '+ before.length());  //  Should be 6, will be 0
  
  var longQ = RecordBug.store.find([RecordBug.Friend, RecordBug.Client]);
  SC.Logger.log('longQ: '+ longQ.length()); // Should be 6, is 6
  
  var after = RecordBug.store.find(RecordBug.Person);
  SC.Logger.log('after: '+ after.length());  // Same as first query, but now it's 6 
  
});