g+ unity shortcut open in new ff window, instead tab

[darkshvein]

google+ unity shortcut open in new firefox window, instead tab.
Firefox tab settings: open links in new tabs.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: unity-webapps-googleplus 2.2
ProcVersionSignature: Ubuntu 3.5.0-23.35-generic 3.5.7.2
Uname: Linux 3.5.0-23-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.6.1-0ubuntu10
Architecture: amd64
Date: Thu Feb 7 15:07:43 2013
InstallationDate: Installed on 2012-09-02 (157 days ago)
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120817.1)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 TERM=screen
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=ru_RU.UTF-8
 SHELL=/bin/bash
SourcePackage: unity-webapps-googleplus
UpgradeStatus: Upgraded to quantal on 2012-10-21 (109 days ago)