iOS Simulator iCloud sign-in

I'm seeing the same thing, if I enter incorrect details it correctly shows invalid id or password but entering correct details result in no failure or success.

I am also seeing this behaviour.

I'm also seeing this behaviour with released version, Xcode 8.3.1. Has anyone found a resolution?

Please file a radar at http://bugreport.apple.com, reference this thread in the radar and also add a reply to this thread with the radar number.

It's ridiculous. I've had this problem. I'm testing 6 devices with and without beta! The security is a joke, My bug report number is 31647254 but may try radar? Apple ask me to do logging and debugging. Might just post the phoned and let them Spend another 3 year trying to sort this issue, however I have just cracked another problem for them, What is this radar about I'm a bit into my seclusion. Cheers