Clicking on the running app shortcut on the Unity Launcher should not open a new window. Moreover, a running app on the Unity Launcher is indicated by an arrow on the left side of the icon. (as shown in the attached image) and a running app can always be restored by pressing and holding the Super-Key and pressing the displayed desired app number on the Unity Launcher.
** Attachment added: "Image" https://bugs.launchpad.net/unity/+bug/772063/+attachment/2119682/+files/screenshot.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/772063 Title: App icon on the Unity Launcher lost track of running instance -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs