two different iPhones and users, a 6s(my wife's phone) and 6s plus(mine) both running 11.0.1. Since 11.0 they both have imessage notification disappearing from the lock screen. neither of us has an apple watch connect or mac to say we are checking the messages from another device. I can see someone sent me a message, the display turns on, while the phone is sitting on my desk a few minutes later I can go to check the message and the notification is no longer on the lock screen. Sometimes this causing me to miss a message as the only way to see I have a new message is by unlocking the phone and have the badge over the message app. anyone else seeing this behavior or know how to resolve it