message: fall back to className if no props?.title - for mx_Dialog_spinner primarily
diff: @@ -105,7 +105,7 @@ class ModalManager {
  }
  createDialog(Element, props, className) {
  - Analytics.trackEvent('Modal', props.title, 'createDialog');
  + Analytics.trackEvent('Modal', props && props.title ? props.title : className, 'createDialog');
  return this.createDialogAsync((cb) => {cb(Element);}, props, className);
  }
  