Unable to stop CBM flash disk

Today when I right clicked in the Nautilus side pane a mounted flash stick I have and selected to "safely remove" it, it disappeared from the list as expected. However I noticed the LED light on the stick didn't go away. After a moment up comes this error message:

(in case the image disappears some time in the future, the text reads: unable to stop cbm flash disk Method "DriveDetach" with signature "as" on interface "org.freedesktop.DeviceKit.Disks.Device" doesn't exist)