Accepted answer

The "make the div height of the chart an absurd size" is why the truncated view was added. If you hover over the xAxis labels the full text is shown. If you want to increase the available size for the xAxis labels you can. Another recommendation would be to use a 'bar' format where the xAxis is vertical and then adjust font sizing of the xAxis label although this is not 100% accurate. What is wrong with the ellipsis?

labels: {
    useHTML: true,
    style: {
        fontSize: '8px',
        width: '300px'

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