Antd Cascader bug

antd-cascader-bug.js

// Reproduce with the following steps:
// 1. npx create-react-app antd-bug
// 2. cd antd-bug
// 3. npm install antd && yarn add antd
// 4. copy this code into into src/index.js
// 5. npm start
// Navigate to localhost:3000
// Use the search box to search for "option". Use backspace and re-type. You will see lines get duplicated. 
// Screen capture video available here: https://www.youtube.com/watch?v=bc9fT4T87ek
// Gif version available here: https://jpc.io/r/antd-bug.gif

import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import { Cascader } from "antd";

ReactDOM.render(
  <Cascader
    showSearch
    placeholder="Testing"
    onChange={function() {
      return null;
    }}
    options={[
      {
        label: "Option 1",
    
        children: [{ label: "Option 1.1", children: [] }]
      },
      {
        label: "Option 2",
        children: [
          { label: "Option 2.1", children: [] },
          { label: "Option 2.2", children: [] }
        ]
      },
      { label: "Option 3", children: [] }
    ]}
  />,
  document.getElementById("root")
);