Yes, that's right: I can see any stored connection and create new connections in the settings. I also can choose these connections in your widget. But the system dialog to change a connection seems to be broken, even after uninstalling your widget.

I reinstalled the icd2-daemon by invoking:
apt-get --reinstall install icd2 icd2-settings-default icd2-network-wlan-config
without any changes.