I don't think looking at mouse position will help. It still will not be known whether they prefer to scroll all or just the one list. In a case where we do not know, the safer option is to scroll everything and let them scroll individual items with the scrollbar otherwise.
I don't think looking at mouse position will help. It still will not be known whether they prefer to scroll all or just the one list. In a case where we do not know, the safer option is to scroll everything and let them scroll individual items with the scrollbar otherwise.