Comment 58 for bug 1241972

I've upgraded the packages unity, libunity-core-6.0-9 and unity-services to the version in trusty-proposed (7.2.6+14.04.20151021-0ubuntu1).

The bug is fixed!
Moving an application icon from the Dash onto the desktop now works correctly.

I also made other tests:
* Moving an app icon onto a file manager works.
* Moving an app icon onto Gedit opens the .desktop file for editing.
* Moving an app icon onto an Terminal pastes the path to the .desktop file.
* Moving an app icon onto the launcher is still working.

About that last point, the "Regression Potential" section in the description says that "It is not possible anymore to drag icons from the dash to the launcher", but it's still working for me.
So it seems to be working perfectly!