- 当前 Bug 的表现（可附上截图） 向上拖拽时，textarea里的文字随着滚动到textarea组件外[图片][图片] - 预期表现 手指在屏幕上移动时，textarea里的文字位置不变 - 复现路径 手指在屏幕上移动 - 提供一个最简复现 Demo 有代码片段

- 当前 Bug 的表现（可附上截图） [图片] - 预期表现 - 复现路径 - 提供一个最简复现 Demo <view class="page-body" style='position: fixed;overflow-y: scroll;width: 100%;height: 100%;'> <view class="page-section"> <view class="page-section-title">输入区域高度自适应，不会出现滚动条</view> <view class="textarea-wrp"> <textarea  fixed='true' value='输入区域高度自适应，不会出现滚动条' bindblur="bindTextAreaBlur" auto-height /> </view> </view> <view class="page-section"> <view class="page-section-title">这是一个可以自动聚焦的textarea</view> <view class="textarea-wrp"> <textarea auto-focus="true" style="height: 3em" /> </view> </view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> <view>1111</view> </view> 直接创建一个空白的小程序页面，然后在wxml文件中粘贴这段代码，手机预览就可看到效果