We are having similiar issues with our web app since upgrading to iOS 11 and we are not using iFrames either. At times the cookie will not be present in the request to the login service thus forcing the user to login. Other times it will be present when it shouldn't be (after expiring it from the logout service).When logging in we add a persistent authentication cookie. When you log out, close the app then relaunch it will sometimes log you right back in to the application because it isn't removing the expired cookie and can be seen in the request back to the login service when launching the application.Other times it is like you described where you login, close the app without logging out. Then launch the application again from the home screen. The persistent cookie is not present in the request at all thus forcing the user to login again.It is hard to troubleshoot also because for some reason the device wont appear any more in the Safari Web Inspector on Mac when trying t
Topic:
Safari & Web
SubTopic:
General
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