I have two tile lists which display images. Both are enabled for drag and drop using the built in handling. In both cases I over-ride the default handling with preventDefault. When I drag an item within the left list, it all works great. If I drag an item from the right list to the left, it seems to work ok, however there is one problem. If I move the mouse to the top of the container (bottom is fine) the list starts scrolling automatically? It is the same the other way (i.e. drag from left to right). If I first drag within the list, and then do one from the other list - its fine. If after application load I only drag from the other list, then I see the problem. And there is no way to get rid of the auto-scroll except to reload. The code run is the same for both cases.
Is this a bug, or am I missing something?