After messing with Muon on Ubuntu 13.04 lots of installed packages suddently got removed, including most of the KDE packages. So I thought that installing ubuntu-desktop and kubuntu-desktop would restore most of them, at least the default ones, but it looks like someting is still missing because when I right-click an app icon at KDE panel I don't see an option to pin it to the panel, i.e. the "Show a launcher when not running" entry is missing. Any thoughts on what KDE package provides this thing?

does the option show for a new user? if it does try removing the taskmanager widget and then re-add it

note: moved to Plasma forum

Re-adding the Icon-only Task Manager helped. thanks.