message: Fix vanishing recently viewed menu
diff: @@ -357,7 +357,7 @@ export default class InteractiveTooltip extends React.Component<IProps, IState>
  } else {
  const targetRight = targetRect.right + window.pageXOffset;
  const spaceOnRight = UIStore.instance.windowWidth - targetRight;
  - return !contentRect || (spaceOnRight - contentRect.width < MIN_SAFE_DISTANCE_TO_WINDOW_EDGE);
  + return contentRect && (spaceOnRight - contentRect.width < MIN_SAFE_DISTANCE_TO_WINDOW_EDGE);
  }
  }
  @@ -371,7 +371,7 @@ export default class InteractiveTooltip extends React.Component<IProps, IState>
  } else {
  const targetBottom = targetRect.bottom + window.pageYOffset;
  const spaceBelow = UIStore.instance.windowHeight - targetBottom;
  - return !contentRect || (spaceBelow - contentRect.height < MIN_SAFE_DISTANCE_TO_WINDOW_EDGE);
  + return contentRect && (spaceBelow - contentRect.height < MIN_SAFE_DISTANCE_TO_WINDOW_EDGE);
  }
  }
  