from dash cannot launch two consecutive times the searched items

Release of Ubuntu: 13.04
Package Version: 6.12.0-0ubuntu4
Expected Results: it launch all the times
Actual Results: it launch only the first time

TESTCASE:

- Open Dash and type 'writer' to search L.O. writer
- Press enter to start L.O. writer
- Once started, close L.O. writer
- Open dash and press enter, it won't relaunch L.O. writer

ProblemType: BugDistroRelease: Ubuntu 13.04
Package: unity 6.12.0-0ubuntu4
ProcVersionSignature: Ubuntu 3.7.0-3.9-generic 3.7.0-rc6
Uname: Linux 3.7.0-3-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.6.2-0ubuntu5
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
CompositorRunning: compiz
Date: Mon Nov 26 14:41:40 2012
DistUpgraded: 2012-10-13 10:00:57,140 DEBUG enabling apt cron job
DistroCodename: raring
DistroVariant: ubuntu
DkmsStatus:
 vboxhost, 4.2.4, 3.7.0-2-generic, x86_64: installed
 vboxhost, 4.2.4, 3.7.0-3-generic, x86_64: installed
EcryptfsInUse: Yes
GraphicsCard:
 Intel Corporation Core Processor Integrated Graphics Controller [8086:0042] (rev 12) (prog-if 00 [VGA controller])
   Subsystem: Giga-byte Technology Device [1458:d000]
InstallationDate: Installed on 2012-10-12 (44 days ago)
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20121011)
MachineType: Gigabyte Technology Co., Ltd. H55M-S2H
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.7.0-3-generic root=UUID=874a505d-d121-4029-b543-ef8ce5fb9498 ro quiet splash vt.handoff=7SourcePackage: unity
UpgradeStatus: Upgraded to raring on 2012-10-13 (44 days ago)
dmi.bios.date: 08/20/2010
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F7
dmi.board.name: H55M-S2H
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF7:bd08/20/2010:svnGigabyteTechnologyCo.,Ltd.:pnH55M-S2H:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnH55M-S2H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: H55M-S2H
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.compiz: compiz 1:0.9.8.4+bzr3412-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.40-1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0.1-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0.1-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.0-0ubuntu8
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.0.0-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.13-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.4-0ubuntu1
xserver.bootTime: Mon Nov 26 09:03:28 2012
xserver.configfile: default
xserver.devices:
 input Power Button KEYBOARD, id 6
 input Power Button KEYBOARD, id 7
 input USB Keyboard KEYBOARD, id 8
 input USB Keyboard KEYBOARD, id 9
 input PIXART USB OPTICAL MOUSE MOUSE, id 10
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.13.0-0ubuntu8
xserver.video_driver: intel