We are having an issue where smart banners appear in Safari on iOS6, but when testing in Safari on iOS7 with non 5s devices the banner briefly appears (sort of a placeholder without content) and then disappears. We have tested other sites other than ours and it seams to be consistent behavior. dropbox.com cnn.com usatoday.com all have smart banners visible with Safari iOS6, but that are disappearing when reached from Safari iOS7 from iPhone4, iPhone4s, iOS Simulator, iPhone5.
Is anyone else seeing this behavior?