Element: [Bug Report] Multi-level header fixed column, fixed width is incorrect, corresponding cell content disappears

[hgl]

Element UI version

2.8.2

OS/Browsers version

mac

Vue version

2.6.10

Reproduction Link

https://codepen.io/anon/pen/YbwyRa?&editable=true

Steps to reproduce

打开重现链接

What is Expected?

所有单元格有内容显示
横向滚动表格，配送信息整列固定

What is actually happening?

多级表头对应的单元格内容缺失
横向滚动表格，固定的宽度不正确

[element-bot]

Translation of this issue:

Element UI version

2.8.2

OS/Browsers version

Mac

Vue version

2.6.10

Reproduction Link

Https://codepen.io/anon/pen/YbwyRa?&editable=true

Steps to reproduce

Open the Reproduction Link

What is Expected?

All cells have content display

Horizontal rolling table with fixed distribution information

What is actually happening?

Lack of cell content corresponding to multilevel headers
Horizontal scroll table, fixed width incorrect

[shaqueoneal]

any way to work around?

[Yin-Xie]

the same to you

[Lyd1223]

the same to you

[SukiYuSijing]

传说将第一级表头设定固定宽度，以及二级表头也设置固定宽度（二级表头的宽度和等于上一级表头的宽度）可以解决这个问题
如图