Ajax search results stopped working after upgrade to v6

The link I shared is for my client’s live site, for which the filter works correctly. However, they have a dev site where they have upgraded to version 6, and ajax no longer works.

The filter list and results are generated with [event_search_form] and [events_list shortcodes. On the live site, the search results are simply wrapped in a div with the class “em-search-ajax”. On dev, they’re wrapped with this:

<div class="em-view-container" id="em-view-1766385962" data-view="list">
<div class="em-list em-events-list size-large" id="em-events-list-1766385962" data-view-id="1766385962">
...
</div>
</div>

It appears that the same JS is present on both sites, So the only difference I can see is the difference in markup. I’ve tried adding ajax=”1″ to the events_list shortcode, but this doesn’t do anything. I also tried removing the EM_AJAX constant from wp-config.php, since this is now enabled by default, but this didn’t do anything, either.

The page I need help with: [log in to see the link]