开发者工具版本是1.06.2303060

<picker
    slot="note"
    class="region-select"
    mode="region"
    level="city"
    bindchange="bindRegionChange"
    value="{{region}}"
  >
  <view class="picker">
      <view class="picker-text" wx:if="{{region.length>0}}">{{region[1]}}</view>
      <view class="picker-text" wx:else style="color:#333">请选择</view>
    </view>
</picker>