message: Bug - Hide items filtered from the dropdown list
  Fixes
diff: @@ -295,6 +295,10 @@ export class Dropdown extends DropdownMixin {
  const bookMarkRows = [];
  const addItem = (key, content) => {
  + if (_.isNil(content)) {
  + return;
  + }
  +
  const selected = !noSelection && key === selectedKey;
  const hover = key === keyboardHoverKey;
  const klass = classNames({'active': selected});
  