WebDriver User Click Possible Error

Hi all, 
	One question about user click (https://dvcs.w3.org/hg/webdriver/raw-file/default/webdriver-spec.html#clicking). It defined a click method and some possible errors.  One of them is "move target out of bounds”,  described below content: 

	if the element cannot be scrolled into view.

But it seems much different with the description of selenium MoveTargetOutOfBoundsException:

	Indicates that the target provided to the actions move() method is invalid


That puzzled me, and i think the description describe in selenium is better match with the error name. Is this a bug in current spec? 

Thanks!