Steps to reproduce :
1. Import the attached project.launch it in iOS device.
2. Click on 'login' button. After that click on 'logout' and see its not
3. If we clear cookies on `logout` event like :
Now its working fine as expected.
So, It should be documented that in iOS platform, We need to do clear the cookies for logging out from the application.
Note : This particular behavior can be noticed only on iOS.