I just set up iCloud Keychain on my iPhone 6...created an iCloud security code to approve devices with and the service is toggled on. I also have all options in Safari settings for Password and Autofill enables (name, credit card, etc.) I just opened Safari and went to Macrumors. I logged into the forums and didn't get any kind of prompt to save my password to the keychain. I went into the saved passwords and it's not there either. Does this service not work with Macrumors? Am I missing something?