使用单文件递归渲染menu，只能渲染2级数据，一旦超过2级数据就会报TypeError: Cannot read property 'propsData' of undefined

[qifengwangye]

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

Version

1.4.4

Environment

chrome 77, vue 2.6.10

Reproduction link

https://segmentfault.com/q/1010000021072238

Steps to reproduce

https://segmentfault.com/q/1010000021072238

What is expected?

能正常渲染

What is actually happening?

使用单文件递归渲染menu，只能渲染2级数据，一旦超过2级数据就会报TypeError: Cannot read property 'propsData' of undefined

[sendya]

请使用第一种 demo 方式，并且 第一种方式也标注了 推荐

[github-actions]

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