message: Bug Stop immediate event propagation in dropdown onClick
diff: @@ -51,6 +51,7 @@ export class DropdownMixin extends React.PureComponent {
  onClick_(selectedKey, e) {
  e.preventDefault();
  e.stopPropagation();
  + e.nativeEvent?.stopImmediatePropagation?.();
  const { items, actionItems, onChange, noSelection, title } = this.props;
  