Problem with autofill functionality of Caldera Forms

With ver. 2.0.0 there seem to be a problem with the autofill functionality of Caldera Forms. Expected behaviour: Defining an input field in the a form processor as an option group allows you to choose this option field in Caldera Form as a source for autofill for an dropdown field, a checkbox field or a radiobutton field. Using the form this fields would then be autopopulated with the options of the option group within CiviCRM. Current behaviour: Defining an input field as an option group in the form processor, you can still select this input in Caldera Forms. When the form is then loaded, no options are shown. Maybe a duplicate with #67 (closed) first point?