The idea I have is to have an icon where you wish to delete items rather than the current system of dragging out of your inventory. The reason I bring this up is items can be accidentally deleted in this case even with the confirmation window. This happened to me recently with some items as I dragged it to the bank but the game registered it as not in the bank so it asked if I wanted to delete it. It came up very quickly and by a stroke of bad luck my cursor was directly above the “yes” icon to delete it and I lost the items.
I figure this trash bin could work like the buyback feature from vendors, similar to a recycle bin on computers where it shows what items you have deleted recently and if you did so by accident you could restore it.