If you filter a view, then scroll around, it will sometimes jump up/down the list at random.
This is more repeatable if you filter the view, then move the scrollbar to the very bottom of the list, then mouse-wheel scroll up really quickly.
After about a page of scrolling the list will suddenly jump down the list.
It also occurs when grabbing the scroll bar and moving it, but because the browser repositions the bar to where your mouse is, it recovers.