If you try to drop a widget on lab/rab/dockbar, it will show the "widgets not allowed message" and widget will disappear from desktop but won't be deleted from database, so rotating/restarting launcher will make it reappear (even if you already added other items in the same place)...
If you try to drop a widget on lab/rab/dockbar, it will show the "widgets not allowed message" and widget will disappear from desktop but won't be deleted from database, so rotating/restarting launcher will make it reappear (even if you already added other items in the same place)...