When the table acquires data asynchronously, and when the length of the columns is not long enough, the fixed style is invalid

[wishong]

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

Version

undefined

Environment

vue3 vite2

Reproduction link

Steps to reproduce

1.table设置 :scroll="{ x: true }"， columns中有项设置了 fixed=right
2.模拟异步获取数据
3.数据获取后，如果表头长度不够长，fixed样式不会生效

What is expected?

异步获取数据后，fixed都生效

What is actually happening?

表头较短时，不生效

表头较长时，生效。进度条拉到最右时，fixed不会消失，应该也是个bug？

[github-actions]

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