This does not happen on the Asus Transformer Book T100, also a Win 8.1 tablet, albeit with a different hardware configuration, see thread 5137 about the Asus. And has not happened on other Win 7 / 8 / 8.1 PCs I have tried.

But there have been some issues with the Surface Pro see thread 4140 and thread 4225. Maybe there are other Surface Pro users who could shed light on the mysteries of this (until now, appealing) little machine?

ok