- [ ] I have searched the [issues](https://github.com/vueComponent/ant-design-vue/issues) of this repository and believe that this is not a duplicate. ### Version 2.2.8 ### Environment Safari ### Reproduction link [https://2x.antdv.com/components/drawer-cn](https://2x.antdv.com/components/drawer-cn) ### Steps to reproduce 在safari中,Drawer渲染在当前 dom 里,Drawer中存在modal时,Drawer的定位会错位 ### What is expected? Drawer正常渲染 ### What is actually happening? Drawer的定位发生错误 <!-- generated by issue-helper. DO NOT REMOVE -->