Fails to execute initial state callbacks

If an ActiveRecord object defines an initial state with callbacks (:enter, for example):

class MyClass < ActiveRecord::Base
  include AASM

  aasm_initial_state :active

  aasm_state :active,    :enter => :do_activate
  aasm_state :inactive

  ...

AASM fails to execute the callbacks during the initial object creation:

MyClass.create! #=> fails to call :do_activate