[1286] scrollToTop or saveBehavior not work when use 100vh height=100% in layout

my layout default.vue

<template lang="pug">
  div
    topbar
    headbar
    channel-nav
    .container.nuxt-page-wrapper
      nuxt
    footbar
</template>

and

layout.styl
.nuxt-page-wrapper
      min-height 100vh

I use scrollToTop in page it's not work

export default {
    scrollToTop: true,
    mounted () {
      window.scrollTo(0, 0)
    }
  }

and my nuxt.config.js also not work

module.exports = {
  ...
  router: {
    scrollBehavior: function (to, from, savedPosition) {
      return false
    }
  },
  ...
}

what's going on?