小程序表单内来回切换输入框，输入框会变得无法输入

问题只出现在真机调试

原始form：

<form bindsubmit="formSubmit"> <view class="weui-cells weui-cells_after-title">   <view class="weui-cell weui-cell_input">       <view class="weui-cell__hd">           <view class="weui-label">站点名</view>       </view>       <view class="weui-cell__bd">           <input class="weui-input"  name="siteName" placeholder="请输入站点名"  />       </view>   </view>   <view class="weui-cell weui-cell_input">       <view class="weui-cell__hd">           <view class="weui-label">站点描述</view>       </view>       <view class="weui-cell__bd">           <input class="weui-input"  name="siteDescription" placeholder="15个字以内，否则不美观"  />       </view>   </view> </view>   <view class="weui-btn-area">     <button class="weui-btn" type="primary"  formType="submit">确定</button>   </view> </form>

连续切换输入框后，某个input变成

<input class="weui-input"  name="siteDescription" placeholder="15个字以内，否则不美观" selection-start=“-1”    selection-end=“-1”  cursor=“-1” />

然后这个输入框就不能再输入了。就是多了几个原来没添加的属性：