Why would logout using devise + omniauth + google-oauth2 + rails work in dev but not in prod -

the logout feature in rails application appears working when run app locally using localhost:3000; however, when logout on production server directing me http://example.com/users/logout , when go http://example.com still logged in.

i pushed changes git repo , both dev / prod both running same source code. not sure why prod box isn't logging user out when click logout link.

development.rb

rails.application.configure   # settings specified here take precedence on in config/application.rb.    # in development environment application's code reloaded on   # every request. slows down response time perfect development   # since don't have restart web server when make code changes.   config.cache_classes = false    # not eager load code on boot.   config.eager_load = false    # show full error reports , disable caching.   config.consider_all_requests_local       = true   config.action_controller.perform_caching = false    # don't care if mailer can't send.   config.action_mailer.raise_delivery_errors = false    # print deprecation notices rails logger.   config.active_support.deprecation = :log    # raise error on page load if there pending migrations.   config.active_record.migration_error = :page_load    # debug mode disables concatenation , preprocessing of assets.   # option may cause significant delays in view rendering large   # number of complex assets.   config.assets.debug = true    # asset digests allow set far-future http expiration dates on assets,   # yet still able expire them through digest params.   config.assets.digest = true    # adds additional error checking when serving assets @ runtime.   # checks improperly declared sprockets dependencies.   # raises helpful error messages.   config.assets.raise_runtime_errors = true    # raises error missing translations   # config.action_view.raise_on_missing_translations = true end 

production.rb

rails.application.configure   # settings specified here take precedence on in config/application.rb.    # general settings   config.app_domain = 'example.io'    # email   config.action_mailer.delivery_method = :smtp   config.action_mailer.perform_deliveries = true   config.action_mailer.default_url_options = { host: config.app_domain }   config.action_mailer.smtp_settings = {     address: 'smtp.example.com',     port:    '587',     enable_starttls_auto: true,     user_name: 'foo',     password: ':)',     authentication: :plain,     domain: 'example.com'   }     # code not reloaded between requests.   config.cache_classes = true    # eager load code on boot. eager loads of rails ,   # application in memory, allowing both threaded web servers   # , relying on copy on write perform better.   # rake tasks automatically ignore option performance.   config.eager_load = true    # full error reports disabled , caching turned on.   config.consider_all_requests_local       = false   config.action_controller.perform_caching = true    # enable rack::cache put simple http cache in front of application   # add `rack-cache` gemfile before enabling this.   # large-scale production use, consider using caching reverse proxy   # nginx, varnish or squid.   # config.action_dispatch.rack_cache = true    # disable serving static files `/public` folder default since   # apache or nginx handles this.   config.serve_static_files = env['rails_serve_static_files'].present?    # compress javascripts , css.   config.assets.js_compressor = :uglifier   # config.assets.css_compressor = :sass    # not fallback assets pipeline if precompiled asset missed.   config.assets.compile = false    # asset digests allow set far-future http expiration dates on assets,   # yet still able expire them through digest params.   config.assets.digest = true    # `config.assets.precompile` , `config.assets.version` have moved config/initializers/assets.rb    # specifies header server uses sending files.   # config.action_dispatch.x_sendfile_header = 'x-sendfile' # apache   # config.action_dispatch.x_sendfile_header = 'x-accel-redirect' # nginx    # force access app on ssl, use strict-transport-security, , use secure cookies.   # config.force_ssl = true    # use lowest log level ensure availability of diagnostic information   # when problems arise.   config.log_level = :debug    # prepend log lines following tags.   # config.log_tags = [ :subdomain, :uuid ]    # use different logger distributed setups.   # config.logger = activesupport::taggedlogging.new(sysloglogger.new)    # use different cache store in production.   # config.cache_store = :mem_cache_store    # enable serving of images, stylesheets, , javascripts asset server.   # config.action_controller.asset_host = 'http://assets.example.com'    # ignore bad email addresses , not raise email delivery errors.   # set true , configure email server immediate delivery raise delivery errors.   # config.action_mailer.raise_delivery_errors = false    # enable locale fallbacks i18n (makes lookups locale fall   # i18n.default_locale when translation cannot found).   config.i18n.fallbacks = true    # send deprecation notices registered listeners.   config.active_support.deprecation = :notify    # use default logging formatter pid , timestamp not suppressed.   config.log_formatter = ::logger::formatter.new    # not dump schema after migrations.   config.active_record.dump_schema_after_migration = false end 

the logout behavior appears working now. put //= require jquery_ujs below //= require jquery in application.js file , able logout on prod box. guys.