When the table component uses a fixed column, it cannot be scrolled when the amount of data is large

[2wsk3]

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

Version

1.7.7

Environment

window7 Google Chrome 93.0.4577.82 vue 2.6.11

Reproduction link

Steps to reproduce

表格列设置固定，表格设置大量数据，无法滚动，滚动时卡死

What is expected?

能够正常滚动

What is actually happening?

界面卡死，无法滚动，取消固定列属性（fixed）后恢复正常

[tangjinzhou]

1.x 请使用分页表格

[github-actions]

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