I just got a new Xbox one controller v2, but it won't turn on when I press the Xbox button.
When I connect the USB cable it starts and works just fine, I can even remove the cable once the controller is up and running and it maintains its connection to my Xbox. But as soon as I turn it of I need the USB cable to "jump start" the controller again.
The Xbox button and everything works as intended after I turned on the controller (with the cable), it just doesn't work as an "on switch" for the controller.
It is updated to the latest firmware and I've tried different batteries.