[2665] Fetch is fired after redirect in middleware

I have two middlewares, one for router, specified in nuxt.config.js (auth.js)

import { AUTH_TOKEN_REQUEST } from '../store/auth'

const getCookieFromReq = req => {
  return decodeURIComponent(req.headers.cookie)
    .split(';')
    .find(c => c.startsWith('feathers-jwt='))
}

const getTokenFromCookie = cookie => {
  return cookie ? cookie.trim().split('=')[1] : null
}

export default ({ store, req }) => {
  console.log('---AUTH MIDDLEWARE---')
  const cookie = process.server ? getCookieFromReq(req) : decodeURIComponent(document.cookie)
  const token = getTokenFromCookie(cookie)
  if (token) {
    return store.dispatch(`auth/${AUTH_TOKEN_REQUEST}`, token)
  }
}

and second specified in any page who needs authentication (authenticated.js)

export default ({ store, route, redirect }) => {
  console.log('---AUTHENTICATED MIDDLEWARE---')
  const isAuthenticated = store.getters['auth/isAuthenticated']
  if (!isAuthenticated) {
    redirect('/auth/login', { next: encodeURIComponent(route.path) })
  }
}

like this page (index.vue)

import { mapState, mapGetters } from 'vuex'

export default {
  middleware: ['authenticated'],
  computed: {
    ...mapState('users', ['users']),
    ...mapGetters('auth', ['isAuthenticated'])
  },
  fetch: ({ store }) => {
    console.log('---FETCH USERS---')
    if (store.getters['auth/isAuthenticated']) {
      return store.dispatch('users/USERS_FIND_REQUEST')
    }
  }
}

And have a problem because fetch method is fired on my page after redirect in middleware, but only on client. When I first click link to that page after refresh all is ok (fetch is not called), but when i go back and click link next time I have this effect.

auth.js:17 ---AUTH MIDDLEWARE---
authenticated.js:17 ---AUTHENTICATED MIDDLEWARE---
index.vue?e488:27 ---FETCH ADMIN---
auth.js:17 ---AUTH MIDDLEWARE---

Why is fetch fired?