Chart behaves identical whether it's dumb (no state) or whether it has state

[GeorgeFlorian]

The docs state that: This is a "dumb" component that doesn't merge its internal state with any updates. This means that if a user interacts with the plot, by zooming or panning for example, any subsequent re-renders will lose this information unless it is captured and upstreamed via the onUpdate callback prop. But the following two pieces of code behave identically:

• without state:

  function StackedAreaChart({) {
  const layout = {
  showlegend: true,
  legend: {
    x: 0,
    y: -0.15,
    orientation: "h",
    traceorder: "normal",
    yanchor: "top",
  },
  autosize: true,
  margin: { pad: 10, b: 10, l: 40, r: 40, t: 80 },
  };
  
  const plotData = [...someData]
  
  return (
  <div style={{ height: 650 }} data-cy="stacked-area-chart">
    <Plot
      data={plotData}
      layout={layout}
      style={{ width: "100%", height: "100%" }}
      useResizeHandler
    />
  </div>
  );
  }
  export default StackedAreaChart;

• and with state:

  function StackedAreaChart() {
  const [chart, setChart] = useState({
  data: [],
  layout: {
    showlegend: true,
    legend: {
      x: 0,
      y: -0.15,
      orientation: "h",
      traceorder: "normal",
      yanchor: "top",
    },
    xaxis: { range: [2000, 2019] },
    autosize: true,
    margin: { pad: 10, b: 10, l: 40, r: 40, t: 80 },
  },
  config: { responsive: true },
  });
  
  useEffect(() => {
  const plotData = [...someData];
  
  setChart((prevState) => ({
    ...prevState,
    data: [...plotData],
  }));
  }, [setChart, data]);
  
  return (
  <div style={{ height: 650 }} data-cy="stacked-area-chart">
    <Plot
      data={chart.data}
      layout={chart.layout}
      config={chart.config}
      style={{ width: "100%", height: "100%" }}
      useResizeHandler
    />
  </div>
  );
  }
  export default StackedAreaChart;

I can pan and zoom and then double click to return to its initial state on both codes. I can also modify the viewport width, making the chart to resize, while zoomed in and the chart still behaves perfectly.

I don't understand the warning in the documentation. Am I doing something wrong ?