The published files on Ubuntu One are not recognized in Nautilus

I have noticed that, even if I have published a file on U1, in Nautilus the option "copy the web link" is not available. I attach to this bug report a screenshot to explain the issue.
As you can see, on the left of the screenshot I have a file published. On the right of the screenshot I have the same file, locally on my disk, that should have the option to copy the URL. But the option is grayed, as if the file is not published.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: nautilus 1:3.2.1-2ubuntu12
ProcVersionSignature: Ubuntu 3.2.0-10.18-generic 3.2.1
Uname: Linux 3.2.0-10-generic x86_64
ApportVersion: 1.91-0ubuntu1
Architecture: amd64
Date: Sat Jan 28 15:12:58 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20111215)
SourcePackage: nautilus
UpgradeStatus: Upgraded to precise on 2012-01-14 (14 days ago)