Model fields not getting initialized

Hello,

 I'm running into an issue where the default values configured on a model are not getting set up if arguments are provided to the constructor. Creating a new model without providing any arguments appears to work just fine. However, it appears that the model skips initializing its fields and default values arguments are provided. See http://dojo.telerik.com/aLOZe for a quick example of this behavior.

 Is there some way to get around this other than by making sure to provide values for all fields?

Thanks!