Similar and perhaps related issue...
In any of several text editors in Windows virtual machines (several different versions), scrolling down or up via mouse wheel, will cause unpredictable jumps within the document (usually to the bottom of the document regardless of which way you were scrolling).
I turned off "Optimize Mouse for Games" in preferences, and this seemed to cure it.
I couldn't survive without automatic release / grab, because I use it all the time.