遇到同问题 唯独点击下拉箭头时正常 第一次点击选择框空白处闪烁 第二次点击正常 bug出现在V2.12.0以上版本

I looked at his code and found that after the handleFocus function was executed, the toggleMenu function was also executed. So my temporary solution is:

import {Select} from 'element-ui'

const ElSelect = {
  mixins: [Select],
  data() {
    return { focusStatus: false }
  },
  methods: {
    toggleMenu() {
      if (this.focusStatus) return this.focusStatus = false
      Select.methods.toggleMenu.call(this)
    },
    handleFocus(event) {
      if (!this.focusStatus) {
        this.focusStatus = true
        event.stopPropagation()
      }
      Select.methods.handleFocus.call(this, event)
    },
    handleBlur(event) {
      this.focusStatus = false
      Select.methods.handleBlur.call(this, event)
    },
  },
}

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