[BUG] [HELP] onDestroy not working?

[ReindDooyeweerd]

I wanted to use vanilla-calendar-pro for a Sveltekit project but i am running into an issue when trying to destroy an instance. The Sveltekit component looks like this:

<script lang="ts">
    // Import Svelte components
    import { page } from '$app/state';
    import { onDestroy, onMount } from 'svelte';

    // Import the Calendar class
    // import { Calendar } from 'vanilla-calendar-pro';

    let calendar: any = $state();

    onMount(async () => {
        const { Calendar } = await import('vanilla-calendar-pro');
        console.log('onMount', calendar);
        // Initialize the calendar
        calendar = new Calendar('#calendar', {
            disableAllDates: true,
            enableDates: ['2025-01-26', '2025-01-27', '2025-01-28', '2025-01-29']
        });
        calendar.init();
        console.log('onMount 2', calendar);
    });

    onDestroy(() => {
        console.log('onDestroy', calendar);
        calendar?.destroy();
        console.log('onDestroy 2', calendar);
    });
</script>

<div class="container">
    <div id="calendar"></div>
</div>

When doing a hard refresh on the page the calendar is properly initialized and works like charm, when i navigate away from the page i would expect that the calendar is destroyed but i am seeing this in my console logs:

onDestroy e {type: 'default', inputMode: false, positionToInput: 'left', firstWeekday: 1, monthsToSwitch: 1, …}
onDestroy 2 e {type: 'default', inputMode: false, positionToInput: 'left', firstWeekday: 1, monthsToSwitch: 1, …}

So it looks like it isn't destroyed... and then i navigate to another page where the calendar component should render a calendar and i see this in the logs:

onMount undefined
onMount 2 e {type: 'default', inputMode: false, positionToInput: 'left', firstWeekday: 1, monthsToSwitch: 1, …}

However the calendar itself isnt rendered and when i inspect the element i see an empty <div id="calendar"></div>. Did i found a bug or am i doing something completely stupid (wouldn't be the first time in my life ;) )

Using "vanilla-calendar-pro": "^3.0.3"