Android “Screen Overlay Detected” message if user is trying to grant a permission when a notification is showing

Question

I have Android Marshmallow on a Nexus 6. I am trying to fix the following problem:

If a user is trying to grant permission while a notification is showing, a \"Scree

Answer 1

1. Delete the apps which have screen overlay like CM security, Clean Master, etc.

2. Even delete and try with Messenger (FB app) if needed.