Memory leak in 5.55.6 version, detached DOM subtrees retained after destroy

Describe the bug

Bug reproduces in 5.55.6 and above, not in version 5.55.5
Seems that something inside Svelte links to the unused DOM node

Reproduction

client.ts

import { mount, unmount } from 'svelte';
import Root from './Root.svelte';

window.root = mount(Root, {
    target: document.body,
    props: {}
});

window.destroy = () => {
    unmount(window.root);
    window.root = undefined;
    window.destroy = undefined;
};

Root.svelte

<script lang="ts">
    const array = new Array(1000).fill(1);
</script>

<div class="svelte-root">
    {#if array}
        {#each array as item}
            {item}
        {/each}
    {/if}
</div>

In version 5.55.6:

1. Call destroy
2. Run garbage collect

1. Run memory -> Detached elements profile

1. Elements remains in memory

Logs

System Info

Svelte 5.55.6
Vite 8 + rolldown

Severity

blocking an upgrade