FIX: Use a cookie to bypass the anon cache

app/controllers/users/omniauth_callbacks_controller.rb

@@ -57,6 +57,7 @@ class Users::OmniauthCallbacksController < ApplicationController
       complete_response_data
 
       if provider && provider.full_screen_login
+        cookies['_bypass_cache'] = true
         flash[:authentication_data] = @auth_result.to_client_hash.to_json
         redirect_to @origin
       else

lib/middleware/anonymous_cache.rb

@@ -64,8 +64,13 @@ module Middleware
         CurrentUser.has_auth_cookie?(@env)
       end
 
+      def no_cache_bypass
+        request = Rack::Request.new(@env)
+        request.cookies['_bypass_cache'].nil?
+      end
+
       def cacheable?
-        !!(!has_auth_cookie? && get?)
+        !!(!has_auth_cookie? && get? && no_cache_bypass)
       end
 
       def cached