钉钉企业接入，获取审批实例返回参数

接口：

dingtalk.smartwork.bpms.processinstance.list (获取审批实例列表)


前几天返回参数是没问题的，如下正确格式：

"approver_userid_list": {
    "string": [
        "01043530283725"
    ]
},
"create_time": "2017-12-14 07:46:15",
"form_component_values": {
    "form_component_value_vo": [
        {
            "name": "所属部门",
            "value": "[\"销售服务部\"]"
        },
        {
            "name": "[\"开始时间\",\"结束时间\"]",
            "value": "[\"2017-12-14\",\"2017-12-14\",1,\"day\",\"调休\",\"请假类型\"]"
        },
        {
            "name": "请假事由",
            "value": "正常调休"
        },
        {
            "name": "图片"
        }
    ]
},
"originator_dept_id": "53524240",
"originator_userid": "055454124720816264",
"process_instance_id": "8801416e-1361-4eae-8a70-6ab2dda86818",
"process_instance_result": "",
"status": "RUNNING",
"title": "xxx的请假-第一分"




但是今天如图产生了问题，表单中的请假时间，请假结束时间，请假类型，请假时长value没有返回给我们了，如下所示

"approver_userid_list": {
    "string": [
        "0467531562695844"
    ]
},
"create_time": "2017-12-10 20:27:33",
"finish_time": "2017-12-10 20:53:21",
"form_component_values": {
    "form_component_value_vo": [
        {
            "name": "所属部门",
            "value": "内场采购部"
        },
        {
            "name": "[\"开始时间\",\"结束时间\"]"
        },
        {
            "name": "请假事由",
            "value": "调休"
        },
        {
            "name": "图片"
        }
    ]
},
"originator_dept_id": "43508725",
"originator_userid": "030609021838923942",
"process_instance_id": "d0efb9c0-7d0c-410d-b0c7-3eaa3bce25e0",
"process_instance_result": "agree",
"status": "COMPLETED",
"title": "xxx的请假-南京"


请问这个接口是什么问题吗