This case? That's what I have too, in fact Ive never used it without the case so I cant imagine how bad it'd be without it.
Having another issue now as well...3rd party app notifications aren't coming though. My Yahoo mail app isn't notifying me of received emails, and my family locator app isnt notifying me when my kids arrive/leave my house like its supposed to and did on my G3. I suppose these could be issues with the apps not ready for Marshmallow though...