Draggable: abspos elements inside of fixed elements moving away from the mouse when scrolling

When dragging a draggable element from an absolutely positioned div inside a position:fixed div, the element moves away from the mouse when scrolling. This happens with all versions I've tried, being 1.10.3, 1.10.2, git, and 1.8.2. Tested it with the newest Chrome and Firefox browsers.

Here's a JSFiddle demonstrating it: http://jsfiddle.net/LRVNq/1/

I realize there's quite a few tickets regarding draggable and scrolling already, but none of them seem to include position:fixed, so this might be a different problem.