missing "open in new window" item in right-click menu

[Teo]

Right click on a folder in Nautilus.
There is an "open" and an "open in new tab" options, but there's no "open in new window", and there should be.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: nautilus 1:3.6.3-0ubuntu16
ProcVersionSignature: Ubuntu 3.8.0-31.46-generic 3.8.13.8
Uname: Linux 3.8.0-31-generic x86_64
ApportVersion: 2.9.2-0ubuntu8.3
Architecture: amd64
Date: Mon Oct 14 15:35:40 2013
GsettingsChanges: b'org.gnome.nautilus.window-state' b'geometry' b"'573x427+83+263'"
InstallationDate: Installed on 2013-10-11 (2 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MarkForUpload: True
SourcePackage: nautilus
UpgradeStatus: No upgrade log present (probably fresh install)