Duplicate drawing screen in functional component

[hellhorse123]

When I rewrite class component to functional - my drawing screen split into two

This is the example code converted into a functional component:
import React, { useState, useEffect } from "react";
import { Jsme } from "jsme-react";

function JsmeContainer() {
  const [smiles, setSmiles] = useState("");

  useEffect(() => {
    console.log(smiles);
  }, [smiles]);

  return (
    <div>
      <Jsme
        height="300px"
        width="400px"
        options="oldlook,star"
        onChange={setSmiles}
      />
    </div>
  );
}

export default JsmeContainer;