Double notification subform on node edit

If on notification UI I choose "In node form. A subscriptions subform will be available when creating or editing node" then I end up having a double subscription subform (see attached screenshot). I tried removing/unistalling the module and loading it again, but I still have the same issue.
I'm using Drupal Commons 2.3 / Notification 2.3 (the same number is a coincidence :-) )