On my config, the 'Moved/Copied' dialog is not detached from the nautilus windows, but it remains displayed on all nautilus windows, including those I open after the copy/move operation is finished.
The copy bar also remains on the Unity icon.
It only disappears when I close all nautilus windows opened. Then, I can open new nautilus window and the copy/move dialog doesn't appear anymore.
This problem seems to appear when I copy many files in one time, or big files.
On my config, the 'Moved/Copied' dialog is not detached from the nautilus windows, but it remains displayed on all nautilus windows, including those I open after the copy/move operation is finished.
The copy bar also remains on the Unity icon.
It only disappears when I close all nautilus windows opened. Then, I can open new nautilus window and the copy/move dialog doesn't appear anymore.
This problem seems to appear when I copy many files in one time, or big files.