Model.reset() does not reset the id

[dpobel]

It seems like the reset() method on a model instance does not reset the id attribute correctly.
Example:

var model = new Y.Model();
model.set('id', 'an id');
model.reset();
// model.get('id') still returns 'an id'

For an unknown reason (to me), at some point the internal state of model object gets the id value as its initValue and this breaks the reset process.