When you have an item in your hands and you're taking items out of that inventory group, your cursor moves to where the item went. So for example if you have a pair of pants in your hands that's full of items, and you click on an item to take it to your inventory your cursor follows the item into your inventory, and that causes you to have to tab over and click down to the pants inventory for each item. It would be better if your cursor would move to the next item in the pants so that you could quickly empty the items into your inventory.