Cascader getPopupContainer 属性设置无效

[myzhoulang]

• I have searched the issues of this repository and believe that this is not a duplicate.

Version

1.1.7

Environment

window10, 所有浏览器， vue: 2.5.2

Reproduction link

Steps to reproduce

1. 设置了getPopupContainer 但是菜单选项总是会添加到 body 下

What is expected?

能正常渲染到 制定的DOM节点下

What is actually happening?

总是在渲染在body

[github-actions]

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