【报Bug】picker-view组件内容滚动会触发下拉刷新的onPullDownRefresh

示例代码：

<template>  
  <view>  
    <view class="uni-padding-wrap">  
      <view class="uni-title">  
        日期：{{year}}年{{month}}月{{day}}日  
      </view>  
    </view>  
    <picker-view v-if="visible"  
      :indicator-style="indicatorStyle"  
      :value="value"  
      @change="bindChange">  
      <picker-view-column>  
        <view class="item"  
          v-for="(item,index) in years"  
          :key="index">{{item}}年</view>  
      </picker-view-column>  
      <picker-view-column>  
        <view class="item"  
          v-for="(item,index) in months"  
          :key="index">{{item}}月</view>  
      </picker-view-column>  
      <picker-view-column>  
        <view class="item"  
          v-for="(item,index) in days"  
          :key="index">{{item}}日</view>  
      </picker-view-column>  
    </picker-view>  
  </view>  
</template>  

<script>  
export default {  
    data () {  
      const date = new Date()  
      const years = []  
      const year = date.getFullYear()  
      const months = []  
      const month = date.getMonth() + 1  
      const days = []  
      const day = date.getDate()  
      for (let i = 1990; i <= date.getFullYear(); i++) {  
          years.push(i)  
      }  
      for (let i = 1; i <= 12; i++) {  
          months.push(i)  
      }  
      for (let i = 1; i <= 31; i++) {  
          days.push(i)  
      }  
      return {  
          title: 'picker-view',  
          years,  
          year,  
          months,  
          month,  
          days,  
          day,  
          value: [9999, month - 1, day - 1],  
          /**  
           * 解决动态设置indicator-style不生效的问题  
           */  
          visible: true,  
          // indicatorStyle: `height: ${Math.round(uni.getSystemInfoSync().screenWidth/(750/100))}px;`  
          indicatorStyle: `height: 50px;`  
      }  
    },  
    onPullDownRefresh () {  
      console.log('refresh')  
    },  
    methods: {  
      bindChange (e) {  
        const val = e.detail.value  
        this.year = this.years[val[0]]  
        this.month = this.months[val[1]]  
        this.day = this.days[val[2]]  
      }  
    }  
}  
</script>  

<style>  
picker-view {  
  width: 100%;  
  height: 600rpx;  
  margin-top: 20rpx;  
}  
.item {  
  line-height: 100rpx;  
  text-align: center;  
}  
</style>

操作步骤：

下拉滚动picker-view中的内容

预期结果：

不会触发生命周期的下拉刷新

实际结果：

触发了