scroll-view内嵌套moveable-view为什么没有办法滚动呢？

  <scroll-view scroll-x="true" scroll-y="true" style="height: 750rpx;width:375px">
    <movable-area style="height: 750rpx;width:425px;" scale-area>
      <movable-view style="height: 750rpx;width:425px;" direction="all" bindchange="onChange" bindscale="onScale" scale
        scale-min="1" scale-max="4" scale-value="{{scale}}">
        <view class="sitbody bg-white">
          
        </view>
      </movable-view>
    </movable-area>
  </scroll-view>