ECharts: Candlestick width not increasing on zoom with time xAxis and ’empty’ filterMode

Using ECharts, I’ve noticed that candlesticks don’t widen when zooming in with these settings:

1. xAxis type is ‘time’
2. dataZoom filterMode is ’empty’
3. Series type is ‘candlestick’

var option = {
    xAxis: { type: 'time' },
    yAxis: { type: 'value', scale: true },
    series: [{
        type: 'candlestick',
        data: ohlcData,
    }],
    dataZoom: [{
        type: 'inside',
        xAxisIndex: [0],
        filterMode: 'empty',
    }, {
        type: 'slider',
        xAxisIndex: [0],
        filterMode: 'empty',
    }]
};

Full example: https://codepen.io/xpatt/pen/RwzZwYR

How can I make candlesticks widen on zoom while keeping the ‘time’ xAxis and ’empty’ filterMode?