Padrino contrib - Route containing :lang symbol is not resolved correctly

app.rb

module NamedParameters
  class App < Padrino::Application
    register Padrino::Mailer
    register Padrino::Helpers

    enable :sessions

    # Autolocale
    register Padrino::Contrib::AutoLocale
    set :locales, [:en]
    set :locale_exclusive_paths, ["/stylesheets","/javascripts","/sessions","/auth"]

    get "/edit/:lang/:id" do
      params.to_s
    end
  end
end