[REGRESSION 13.04] "New tab" item missing in Nautilus menu

Open a Nautilus window
Go to the top of the screen.
There is only a "Files" menu. Click on it to unfold it.

There is a "New window" option but there is no "New tab" option.
It used to exist until ubuntu 12.10, now it's gone without a good reason.

Yes, you can easily open a new tab by right-clicking on a folder and choosing "open in new tab" from the context menu. But the same can be said about opening a new window, yet the new window option does exist.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: nautilus 1:3.6.3-0ubuntu16
ProcVersionSignature: Ubuntu 3.8.0-29.42-generic 3.8.13.5
Uname: Linux 3.8.0-29-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.9.2-0ubuntu8.3
Architecture: i386
Date: Sat Aug 17 22:22:54 2013
GsettingsChanges:
 b'org.gnome.nautilus.window-state' b'geometry' b"'1322x738+363+254'"
 b'org.gnome.nautilus.window-state' b'sidebar-width' b'180'
InstallationDate: Installed on 2010-06-23 (1151 days ago)
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: nautilus
UpgradeStatus: Upgraded to raring on 2013-08-10 (7 days ago)