iview Row Col loop nested bug

 <Row gutter="30">
      <Col span="16" v-if="goodscm3Toggle">
          <Form-item label="体积（长宽高）：" prop="goodscm3" vtype="int" >    
              <Row gutter="10">
                  <Col span="7">
                      <Input v-model="deliveryData.goodsLength"  placeholder="长"></Input>
                  </Col>
                  <Col span="7">
                      <Input v-model="deliveryData.goodsWidth"  placeholder="宽"></Input>
                  </Col>
                  <Col span="7">
                      <Input v-model="deliveryData.goodsHeight" placeholder="高"></Input>
                  </Col>
              </Row>
          </Form-item>
      </Col>
</Row>