This morning, i got Oreo. Now i discovered a strange issue. When i put notification volume to only vibrate, this is not permanent. After a few minutes or after something happens (no idea what) the phone goes from itself back to a low notification sound level and is no longer in "vibrate only". Any ideas?
I also face the same problem, my Nokia 8 also does not vibrate or gives haptik feedback on touching navigation buttons or its not persistent i.e sometimes it's gives vibration and many times it stops abruptly. Please advise some solutions.