Label can't display when ECharts label's length is too long
<p>I just use the treemap type of EChart to show the data. But I meet a problem. And the label option shows as the following:
    itemStyle:{
    normal:{
    label:{ show :true,
    formtter:"{b}"}</p>

<p>If my data name's length is too long(maybe more than 60 characters), the label doesn't show on the Treemap. The Name will show on the tooltip. Why?
How can I solve this problem? Thanks !</p>