After navigating to a certain page - let's call it Chat, it want to scroll programmatically to the bottom of the page. In pure JS it would look like this:

window.scrollTo(0,document.body.scrollHeight);

Which words fine - but it does not work after Vue-Router changes. For that to work, the rounter config needs to be changed:

const router = new VueRouter({
  mode: 'history',
  base: process.env.BASE_URL,
  routes,
  scrollBehavior (to, from, savedPosition) {
    if (savedPosition) {
      return savedPosition
    } else if (to.name === 'Chat'){
      return { x: 0, y: window.innerHeight }
    }
    return false
  }
})

If a savedPosition exist (in case of back/forward navigation with browser buttons), return that saved position, if the page is called Chat, then scroll y to the window.innerHeight.