Rails 3.1 Helper Issue in production mode with cache_classes=true

page.rb

#model page.rb
class Page < ActiveRecord::Base
  STATUSES = %w[new published]
end

page_helper.rb

#Page helper module
module PageHelper
  def possible_statuses(right)
    statuses = Page::STATUSES 
    statuses.delete("publish") if (right != "can_publish")
    statuses
  end
end

test.rb

possible_statuses("no_rights")  # Should return ["new"]
possible_statuses("can_publish") # Should return ["new", "published"] 

# if options.cache_classes = true
possible_statuses("no_rights")  # Returns ["new"] OK
possible_statuses("can_publish") # Return ["new"] Not correct...

# if options.cache_classes = false
possible_statuses("no_rights")  # Returns ["new"] OK
possible_statuses("can_publish") # Return ["new", "published"] OK

# Thought 1:
# It seems like the helper method is a bit "smart" and changes 
# the const STATUSES even though statuses and STATUSES as variables 
# with different cases shouldn't be equal

# What really happens is Ruby Object assignment.
# Read: http://stackoverflow.com/questions/2635156/object-assignment-and-pointers

# This won't happen i development because of classes beeing reloaded for each request...