A cascader with loadData in form cannot show complete initialValue .only first level.

• I have searched the issues of this repository and believe that this is not a duplicate.

Version

3.6.4

Environment

…

Reproduction link

http://www.google.com

Steps to reproduce

              {getFieldDecorator("position", {
                rules: [{ required: true, message: "位置不能为空!" }]
                 initialValue: [
                  detailInfo ? detailInfo.building.buildingId : "",
                 detailInfo ? detailInfo.floor.ordinal : ""
                 ]
              })(
                <Cascader
                  options={buildingOptions}
                  onChange={onChange}
                  style={{ width: "95%" }}
                  placeholder="请选择"
                  loadData={this.onLoadData}
                />
              )}
            </FormItem>

What is expected?

can show initialValue normal

What is actually happening?

only first level data

[freeznet]

here is an online reproduction https://codesandbox.io/s/91v45j068r

@afc163 reopen plz

[jiaoyilun]

+1 Having the exact same issue.