Squeel bug report (duplicated "order by" when using default_scope inherited to a STI sub class)

bug-report.rb

# encoding: utf-8

gem 'sqlite3', '1.3.6'
gem 'activerecord', '3.2.8'
gem 'squeel', '1.0.11'

require 'active_record'

require 'squeel'
require 'squeel/version'
require 'logger'

puts "Active Record #{ActiveRecord::VERSION::STRING}"
puts "Squeel #{Squeel::VERSION}"

ActiveRecord::Base.logger = Logger.new(STDOUT)

ActiveRecord::Base.establish_connection(
  :adapter  => 'sqlite3',
  :database => ':memory:'
)

ActiveRecord::Schema.define do

  create_table :cars do |t|
    t.string :name
    t.string :type
    t.datetime :start_at
  end
  

  create_table :customers do |t|
    t.string :name
    t.string :type
    t.datetime :start_at
  end

end

class Car < ActiveRecord::Base
  default_scope order( "start_at" )
end 
class Truck < Car; end


class Customer < ActiveRecord::Base
  default_scope order{ start_at.asc }
end
class Company < Customer; end


# When not using squeel the generated sql looks fine
Car.last
Truck.last

# When using squeel on the sti subclass 
# the order by is dublicated
puts "======================================================================="
puts "# => \"'customers'.'start_at' DESC\" will be duplicated"
puts "======================================================================="

Customer.last
Company.last