Translation of this issue:

Element Plus version

1.2.0-beta.5

OS/Browsers version

win10

Vue version

3.2.23

Reproduction Link

https://codepen.io/aliang888/pen/oNemxjJ

Steps to reproduce

Open the console and you can see the results of multiple calls

What is Expected?

cityID=2

cityID=1
cityID=22

What is actually happening?

cityID=2

cityID=1
cityID=22

cityID=2
cityID=1

cityID=22

mark

h(
    ElTableColumn,
    {
      label: header.name,
      prop: header.prop,
      width: header.width,
      showOverflowTooltip: true,
      align: header.align ? header.align : 'center'
    },
    {
      default: (props) => header.render(props.row)
    }
  )

试试这个, header.render(props.row) 调用6次
"element-plus": "^1.1.0-beta.24"
"vue": "^3.2.20"
"vite": "^2.5.1"
"typescript": "~4.1.5"