All new hardware especially new processors tend to reveal new bugs as well. That is the case with the new Surface Book and Surface Pro 4 as users are reporting and we can confirm a rather serious bug that occurs when in Standby aka InstantGo.
They symptom is a familiar one to those with Surfaces: You toss your Surface into the bag and when you get home from work, and you remove it the Surface is unusually warm. Turning on the Surface and the battery has depleted confirming your suspicion that the computer was on and running.
Full story from the WindowsCentral blog...