Table column fixed left or right，There's something wrong with the vertical roll

[eyunhua]

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

Version

2.1.3

Environment

macOs 10.15.7,chrome 90.0.0.4430.85,vue3.0.11,ant-desgn-vue2.1.3

Reproduction link

Steps to reproduce

左右两边均有列固定，横向无滚动条，纵向有滚动条，纵向滚动到最底部，在固定列区域再往下滑动，就会出现横向的列对不齐的情况

What is expected?

横向的列对齐

What is actually happening?

横向的列对不齐

[github-actions]

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