Menu Button stops working

We just got an Apple TV 4. Sometimes the "menu" button just stops working and leaves me stuck in whatever app I'm in. I can continue to navigate deeper into the app, but I can't go back. When I press "menu" or "home" the light on the TV box blinks, but nothing happens on the screen.

The only remedy I have found is to unplug the unit and "force" a restart. After doing this, my unit works perfectly. I don't know if this means my unit is beginning to fail, or is simply an annoying issue that comes up periodically. Thank you for your suggestions.