In Q3 2013 the clicking of RadButton is not raised when Enter key is pressed inside a password TextBox and the RadButton is set to be the default button for the form.

The workaround is to put the following JavaScript code below the declaration of the RadButton:

                                        <script type="text/javascript">
                                            Telerik.Web.UI.RadButton.prototype._isInputTypeText = function (element) {
                                                var nodeName = element.nodeName,
                                                  type = element.type;
                                                if (nodeName != "INPUT" || !type) return false;
                                                return type == "text" || type == "password" || type == "email" || type == "number" || type == "url" || type == "search" || type == "tel";
                                            }
                                        </script>