message: hide popup to reset the activeKey to trigger rc-menu activeKey reset
  fix ant-design/ant-design#13234
diff: @@ -45,7 +45,7 @@ export default class DropdownMenu extends React.Component {
  this.lastVisible = false;
  }
  // freeze when hide
  - return nextProps.visible || nextProps.inputValue !== this.props.inputValue;
  + return (this.props.visible && !nextProps.visible) || nextProps.visible || nextProps.inputValue !== this.props.inputValue;
  }
  componentDidUpdate(prevProps) {
  @@ -121,6 +121,8 @@ export default class DropdownMenu extends React.Component {
  if (selectedKeys.length || firstActiveValue) {
  if (props.visible && !this.lastVisible) {
  activeKeyProps.activeKey = selectedKeys[0] || firstActiveValue;
  + } else if (!props.visible) {
  + activeKeyProps.activeKey = null;
  }
  let foundFirst = false;
  // set firstActiveItem via cloning menus
  