The el-table of elementui displays and hides the dislocation problem of the table header through the v-if control button

  <el-table-column label="select style" :key="Math.random()" prop="selectStyle" />

Add :key="Math.random()" to each column  

If the table appears jitter plus

  beforeUpdate() {

  this.$nextTick(() => {

    this.$refs.table.doLayout()

  })

},