unity panel incorrect behaviour

[Dmitry G.]

step by step:
1. I started gnome-terminal from unity panel (launcher).
2. I closed gnome-terminal
3. I started gnome-terminal from unity panel (launcher).
4. I closed gnome-terminal
5. I started gnome-terminal from unity panel (launcher).
6. I closed gnome-terminal
There was three or four icons for gnome-terminal at panel (despite only one process gnome-terminal running in the system) after all.
Then something magic happens and three "fantom" icons disappeared^W became invisible, but functional yet.
Then I started gnome-system-monitor and three icons for system monitor appears simultaneously (yes, for only one process gnome-system-monitor, see screenshot).

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: gnome-terminal 3.2.1-2ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-8.15-generic-pae 3.2.0
Uname: Linux 3.2.0-8-generic-pae i686
NonfreeKernelModules: nvidia
ApportVersion: 1.90-0ubuntu1
Architecture: i386
Date: Fri Jan 13 15:08:01 2012
ExecutablePath: /usr/bin/gnome-terminal
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20120112)
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-terminal
UpgradeStatus: No upgrade log present (probably fresh install)

[Dave Gorski (gorski-dave)]

Just as a tip, we call that the launcher, not the panel :)

[Hernando Torque (htorque)]

I've seen that in the past, but was unable to reproduce it.

[Omer Akram (om26er)]

thanks for your bug report. Is that still an issue in Ubuntu 12.04? Can you please test that and let us know?

[Sergio Barjola (sbarjola)]

this happen to me with the gnome-system-monitor icon in Ubuntu 12.04. I searched the applicaction and do drag-drop the icon to the launcher.
Running unity --reset solve the problem.

[Sergio Barjola (sbarjola)]

I've tested with the latest updates and now it's fixed.

Ubuntu release: 12.04.1

Version of unity:
unity 5.16.0-0ubuntu1

[N1ck 7h0m4d4k15 (nicktux)]

Hello and
thank you for taking the time to report this bug. We have tried to recreate this on the latest release of Ubuntu, but cannot reproduce it. This bug is being marked as Invalid. If you believe the problem to still exist in the latest version of Ubuntu, please comment on why that is the case and change the bug status to NEW.

Regards
NickTh