Use backbutton eventListener in svelte

I am trying to implement a scroll to last position functionality when the user clicks on the backbutton in the browser. So in my App.svelte, I created a window binding like this:

<svelte:window bind:scrollY={y} on:backbutton={e => console.log('FIRED')} />

My problem is that it does not work. Is there another way to use eventListeners or listen to this specific event?