message: Keep reference to stickers menu
diff: @@ -134,7 +134,7 @@ export default class Stickerpack extends React.Component {
  const x = buttonRect.right + window.pageXOffset - 37;
  const y = (buttonRect.top + (buttonRect.height / 2) + window.pageYOffset) - 19;
  // const self = this;
  - ContextualMenu.createMenu(GenericElementContextMenu, {
  + this.stickersMenu = ContextualMenu.createMenu(GenericElementContextMenu, {
  chevronOffset: 10,
  chevronFace: 'bottom',
  left: x,
  @@ -150,11 +150,12 @@ export default class Stickerpack extends React.Component {
  }
  onHideStickersClick(ev) {
  - this.setState({showStickers: false});
  + this.stickersMenu.close();
  }
  onFinished() {
  this.setState({showStickers: false});
  + this.stickersMenu = null;
  }
  _launchManageIntegrations() {
  