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

You must disable the overlay for all the apps you see in the list. Only this way can you modify authorizations in the app you need. I've done that in safe mode, and it worked. At the end I rebooted the phone and now it is working fine.