config.load_paths and namespace issue

If I create a directory called jobs at /app/jobs
then add a ruby class Jobs::Bar (/app/jobs/bar.rb)
instantiating this object while running under 'rails server' fails with "NameError: uninitialized constant Jobs"
and in 'rails console' it fails with the same error but can then be loaded (see below console session)

using rvm
running ruby-1.9.1-p378 [ i386 ]
Rails 3.0.0.beta3

the below works fine in rails 2.2.2 and ruby 1.8.7

# /config/application.rb
config.load_paths += %W( #{config.root}/app/jobs )

# /app/jobs/bar.rb
module Jobs
  class Bar
    def hello
      "Bar says hello"
    end
  end
end

$> rails console

ruby-1.9.1-p378 > b = ::Jobs::Bar.new
NameError: uninitialized constant Jobs
    from (irb):3
    from /Users/house/.rvm/gems/ruby-1.9.1-p378/gems/railties-3.0.0.beta3/lib/rails/commands/console.rb:47:in `start'
    from /Users/house/.rvm/gems/ruby-1.9.1-p378/gems/railties-3.0.0.beta3/lib/rails/commands/console.rb:8:in `start'
    from /Users/house/.rvm/gems/ruby-1.9.1-p378/gems/railties-3.0.0.beta3/lib/rails/commands.rb:34:in `<top (required)>'
    from script/rails:9:in `require'
    from script/rails:9:in `<main>'

# it makes sense that this would fail since it doesn't really exist
ruby-1.9.1-p378 > b = Bar.new
LoadError: Expected /Users/house/projects/sandboxfor3/app/jobs/bar.rb to define Bar
    from /Users/house/.rvm/gems/ruby-1.9.1-p378/gems/activesupport-3.0.0.beta3/lib/active_support/dependencies.rb:453:in `load_missing_constant'
    from /Users/house/.rvm/gems/ruby-1.9.1-p378/gems/activesupport-3.0.0.beta3/lib/active_support/dependencies.rb:153:in `block in const_missing'
    from /Users/house/.rvm/gems/ruby-1.9.1-p378/gems/activesupport-3.0.0.beta3/lib/active_support/dependencies.rb:151:in `each'
    from /Users/house/.rvm/gems/ruby-1.9.1-p378/gems/activesupport-3.0.0.beta3/lib/active_support/dependencies.rb:151:in `const_missing'
    from (irb):4
    from /Users/house/.rvm/gems/ruby-1.9.1-p378/gems/railties-3.0.0.beta3/lib/rails/commands/console.rb:47:in `start'
    from /Users/house/.rvm/gems/ruby-1.9.1-p378/gems/railties-3.0.0.beta3/lib/rails/commands/console.rb:8:in `start'
    from /Users/house/.rvm/gems/ruby-1.9.1-p378/gems/railties-3.0.0.beta3/lib/rails/commands.rb:34:in `<top (required)>'
    from script/rails:9:in `require'
    from script/rails:9:in `<main>'

# now it works as expected? but only after doing 'b = Bar.new' which is invalid?
ruby-1.9.1-p378 > b = ::Jobs::Bar.new
 => #<Jobs::Bar:0x2484b64> 
ruby-1.9.1-p378 > b.hello
 => "Bar says hello"

Everything works correctly in the following similar situations

• namespaces under /app/models, -- for example /app/models/jobs/bar.rb with the exact same class definition and no config.load_paths
• a non-namespaced class under /app/jobs with config.load_paths -- for example

# /app/jobs/foo.rb
class Foo
end

Foo.new # no errors