### Version 1.12.27 ### Reproduction link [https://github.com/leeyii2top/MyIssues/blob/master/cube/%E8%A1%A8%E5%8D%95input%E6%A0%B7%E5%BC%8Fbug.md](https://github.com/leeyii2top/MyIssues/blob/master/cube/%E8%A1%A8%E5%8D%95input%E6%A0%B7%E5%BC%8Fbug.md) ### Steps to reproduce 看reproduction链接 ### What is expected? cube-input 显示正常 ### What is actually happening? 在表单中 cube-input 的append元素会使样式错乱,具体看reproduction链接 ### Dependencies Version vue: 2.6.9 better-scroll: 1.15.0 <!-- generated by cube-issue-helper. DO NOT REMOVE -->