XAxis repeats itself in Rechart's ScatterChart when type="category"

In the following picture/code there should only be one occurrence of hi, hello and bye. Any ideas on why it's repeating?

Edit in browser here : http://jsfiddle.net/ndLhnegs/318/ Edit: I made another, simpler example here : http://jsfiddle.net/7coegorj/2/

React Rechart component:

const {Scatter, ScatterChart, XAxis, YAxis, CartesianGrid, Tooltip, Legend} = Recharts;
const Chart = React.createClass({
  render(){
      const selected = [
        {value:'obj1',label:'Obj1'},
        {value:'obj2',label:'Obj2'},
        {value:'obj3',label:'Obj3'},
        {value:'obj4',label:'Obj4'},
      ]
      const scatters = selected.map((s) => {
        let data = [
          {x:'hi',y:Math.random() * 10},
          {x:'hello',y:Math.random() * 10},
          {x:'bye',y:Math.random() * 10},
        ]
        return (
          <Scatter
            key={s.label}
            name={s.label}
            data={data}
            fill='#000'
            line
            shape="cross" />
        );
      });
      return (
        <ScatterChart width={600} height={400} margin={{ top: 20, right: 20, bottom: 20, left: 20 }}>
          <XAxis  dataKey='x' name='Macro' />
          <YAxis type="number" dataKey={'y'} name='Grams' unit='g' />
          <CartesianGrid />
          <Tooltip cursor={{ strokeDasharray: '3 3' }} />
          <Legend />
          {scatters}
        </ScatterChart >
      );
    }
})

ReactDOM.render(
  <Chart />,
  document.getElementById('container')
);

Submitted a GitHub issue here - https://github.com/recharts/recharts/issues/1034