Hi,
The fields in the form designer palette are mapped to the input parameters of the workflow that your building blueprint/resource action on. In the case of resource action, the input parameter you have selected to bind the resource too is removed. In your case it looks like your workflow has only one input of type DynamicTypes that you used to bind the resource to in the resource action, this is why the panel is empty.
If you want to show read only the values of the attribute of the DynamicType object, then you did it exactly the way it is designed to (as in )
About why the finder method is called multiple times it is beyond me. I may have to investigate deeper.