Why won't my Galaxy S5 phone screen turn off after the notification?

A

AC Question

my galaxy s5 phone screen wont turn off after notification.

so my phone screen stays on after any notification comes in. it will only turn off if I press the lock button. every time I wake up my screen is on . so its killing my battery .I already turned off the feature it stays on as long as you are looking at it. my screen time out is 15 secs and I have power saving on and it still does it.