Dragging the launcher with right mouse button is confusing as menu pops up

=== Test case ===

1. Install unity 3.8.16 from natty-proposed
2. Restart unity (logout/login or compiz --replace)
3. Right-click on launcher but don't let go of the right mouse button (keep it pressed)
4. Drag mouse down like you were dragging the launcher
5. Launcher should not drag, you should just get the QL menu opened

===

Binary package hint: unity

If I pull down the application panel from Unity, the context menu pop up. (like right click on a starter)

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: unity 3.6.4-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-6.34-generic 2.6.38-rc7
Uname: Linux 2.6.38-6-generic x86_64
NonfreeKernelModules: nvidia
.proc.driver.nvidia.gpus.0: Error: [Errno 21] Ist ein Verzeichnis: '/proc/driver/nvidia/gpus/0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 270.29 Wed Feb 23 16:18:35 PST 2011
 GCC version: gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-5ubuntu2)
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,decor,compiztoolbox,vpswitch,grid,mousepoll,imgpng,gnomecompat,water,move,regex,snap,wall,place,resize,shift,animation,workarounds,expo,session,ezoom,staticswitcher,fade,scale,ring,unityshell]
CompositorRunning: compiz
Date: Mon Mar 14 20:08:14 2011
DistUpgraded: Log time: 2011-03-08 22:09:20.913845
DistroCodename: natty
DistroVariant: ubuntu
DkmsStatus:
 nvidia-current, 270.29, 2.6.38-6-generic, x86_64: installed
 nvidia-current, 270.29, 2.6.38-5-generic, x86_64: installed
 vboxhost, 4.0.4, 2.6.38-6-generic, x86_64: installed
GraphicsCard:
 nVidia Corporation GF106 [GeForce 450 GTS] [10de:0dc4] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: CardExpert Technology Device [10b0:0801]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110302)
InstallationMedia_: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110302)
InstallationMedia__: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110302)
JockeyStatus: xorg:nvidia_current - Beschleunigter Grafiktreiber von NVIDIA (Proprietär, Aktiviert, In Benutzung)
MachineType: System manufacturer System Product Name
ProcEnviron:
 LANGUAGE=de_DE:en
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-6-generic root=UUID=e50277c8-2f8f-4cdf-b807-fc1deb2b5087 ro quiet splash vt.handoff=7
ProcVersionSignature_: Ubuntu 2.6.38-6.34-generic 2.6.38-rc7
ProcVersionSignature__: Ubuntu 2.6.38-6.34-generic 2.6.38-rc7
Renderer: Unknown
SourcePackage: unity
UpgradeStatus: Upgraded to natty on 2011-03-08 (5 days ago)
dmi.bios.date: 08/24/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1005
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: M4A87TD/USB3
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1005:bd08/24/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM4A87TD/USB3:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
version.compiz: compiz 1:0.9.4-0ubuntu4
version.libdrm2: libdrm2 2.4.23-1ubuntu3
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.1-0ubuntu1
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg: xserver-xorg 1:7.6~3ubuntu11
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu5