The issue is that when you are scrolling on an editor page that includes spinboxes (a big dataformat), the focus of the mouse can easily change to one of the spinboxes. You are scrolling down and suddenly it stops scrolling, by the time you realize why it is not scrolling the value of some of the spinboxes have already changed and it is safe to assume that user does not know the previous value!

If this focus functionality is disabled the problem will probably is solved.