problem in the notifications google

[Dario Scardy]

Hello,
when I receive a notification of Google (gmail, chrome), the phone will still vibrate continuously until remove notifications.
can someone help me? Thanks.
i have a HTC One M9

 

[B. Diddy]

Welcome to Android Central! Make sure Notification Reminder isn't turned on in the Accessibility settings: Accessibility options on the HTC One M9 | Android Central