Problems with redirection in vue-router

<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <meta name="renderer" content="webkit">
  <title></title>
  <style>
  </style>
</head>
<body>
  <div id="app">
    <router-link to="/">Home</router-link>
    <router-link to="/about">About</router-link>
    <router-link to="/toHome">toHome</router-link>
    <router-link to="/toAbout">toAbout</router-link>
    <router-view></router-view>
  </div>
  <script src="https://cdn.bootcss.com/vue/2.5.9/vue.js"></script>
  <script src="https://cdn.bootcss.com/vue-router/3.0.1/vue-router.min.js"></script>
  <script>
    const router = new VueRouter({
      routes: [{
        path: "/",
        component: {
          template: "<div>Home</div>"
        }
      }, {
        path: "/about",
        name: "about",
        component: {
          template: "<div>About</div>"
        },
       
      }, {
        path: "/toAbout",
        redirect(to) {
          // to   "/toAbout"
          console.log(to)
          return {
            name: "about"
          }
        }
      }, {
        path: "*",
        redirect: "/"
      }]
    })
    const app = new Vue({
      el: "-sharpapp",
      router,
      data: {
        
      },
      methods: {
        
      }
    })
  </script>
</body>
</html>

set a redirect function for the toAbout route, and the return value is the redirected target
A problem is found here, that is, if you click on another route redirect will also execute
first click home and then click toAbout will execute twice in a row
what I expect is to click toAbout to execute once, click on other routes will not execute
excuse me, what is the cause of this problem

Mar.28,2022
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3f2bd-2c459.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3f2bd-2c459.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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