When you are moving item/items by draging them from one inventory (fx. from Item hangar, ship inventory, drone bay, frigate escape bay etc) and draging them to another one by mouse, there is no mouseover highlight effect on the destination hangar like it is on old UI. It would be really nice to have that feature back so you are sure what hangar you put your items in, especially on smaller UI sizes.
The highlights works in inventory window when you moeover over items, over ships in ship hangar etc, so that feature is there in that window, it is just missing when you drag item/items from the inventory by mouse and drag them to any of the hangars from the left column.