If a notification comes, I can go to the app by sliding them in lock screen/tapping on the notification pop-up if I am using the device when the notification comes. But, I can't go to the app by tapping on notifications in notification center, nothing happens. I can 3D touch on them to interact with it, but nothing happens if I tap on them.
I restored the ipsw file, and did set up the device with 'the new iPhone' option, I didn't restored any backup.
My device is iPhone 6s.
On the other hand, my iPhone 5, iPhone 5s and iPad Air have not any problems with notifications. Is it related to iPhone 6s?
Note that, it is not related to any application, I can't go to any app by tapping on notification in notification center.