Insert an optical media or connect a pen drive in your computer
open Dolphin, click on your device on left panel to show its content
right click on your device on left panel, select "eject media-label" or "safely remove device-label"

Actual result: dolphin shows empty window with the media/device mount point in location bar (See the screenshot please)

I think this behaviour might be improved, maybe closing the Dolphin window after unmount/remove the media/device or going to home folder automatically.