js vscode 关于对象数组的一个bug

数据结构：

let address = [{label: "北京市",children: []},{label: "天津市",children: []},{label: "上海市",children: []},{label: "重庆市",children: []},{label: "河北省",children: [{label: "石家庄市"},{label: "唐山市"},{label: "秦皇岛市"},{label: "邯郸市"},{label: "邢台市"},{label: "保定市"},{label: "张家口市"},{label: "承德市"},{label: "沧州市"},{label: "廊坊市"},{label: "衡水市"}]},]

vscode控制台打印结果：

浏览器运行打印结果：