message: Changed for consistency with fluent peekable
diff: @@ -59,7 +59,7 @@ class Scene extends React.Component<SceneProps, SceneState> {
  }
  onBeforeNavigate(_state, _data, url: string) {
  var {crumb, navigationEvent} = this.props;
  - if (url.split('crumb=').length - 1 !== crumb || Platform.OS === 'android')
  + if (url.split('crumb=').length - 1 !== crumb || Platform.OS !== 'ios')
  return true;
  var {crumbs} = navigationEvent.stateNavigator.stateContext;
  var changed = !this.state.navigationEvent && crumb < crumbs.length;
  