See screenshot. Press mouse wheel on any groups name or icon to open the context menu. There is a option with no label (below Alternatives... option) that does nothing. This context menu do not show 'Panel Options >', visible if you right click on "K" icon. Reproducible: Always
Created attachment 90324 [details] Screenshot
Not specific to Kicker, this also happens e.g. in the system tray popup (and the context menu shouldn't even open on middle-click). Reassigning to General.
Git commit 7476decf2987e3f6f1a1c5840fad37d12090facc by Kai Uwe Broulik. Committed on 11/01/2015 at 16:50. Pushed by broulik into branch 'master'. Fix errorneously opening a broken context menu when middle clicking Plasma popup M +14 -1 src/scriptengines/qml/plasmoid/appletinterface.cpp http://commits.kde.org/plasma-framework/7476decf2987e3f6f1a1c5840fad37d12090facc