To be able to minimize a window through clicking on the icon in starter, I executed the following command from the UbuntuUsers Wiki (German):
gsettings set org.compiz.unityshell:/org/compiz/profiles/unity/plugins/unityshell/ launcher-minimize-window true
Now when there are two ore more windows open from the same application and I click on the icon Unity crashes and I get the logon screen. For example if I open two Firefox-windows (both maximized) and click on the icon in the starter it crashes and I have to log on again.
How can I solve this issue, so that my desktop isn't crashing anymore? Expected behavior would be, that the window with the focus get minimized, instead of crashing...