This was how we solved this. Now after my new filter elements are loaded they also filter the collection list. Big thanks to @Support-Luis on sending me this code!
<script>
window.fsAttributes = window.fsAttributes || [];
window.fsAttributes.push([
'cmsload',
(listInstances) => {
console.log('cmsload Successfully loaded!');
const [listInstance] = listInstances;
listInstance.on('renderitems', (renderedItems) => {
window.fsAttributes.push([
'cmsfilter',
(filterInstances) => {
console.log('cmsfilter Successfully refreshed!');
const [filterInstance] = filterInstances;
filterInstance.storeFiltersData();
},
]);
});
},
]);
</script>