Hi there,
It’s sure a compatibility issue between your javascript code and the builder preview. It’s the same with other bundled plugins, it requires integration between the builder and javascript for it to work. All javascript should be loaded with Wordpress Enqueue and it’s Wordpress’s standard, https://developer.wordpress.org/reference/functions/wp_enqueue_script/.
But sometimes it may still not work if the script doesn’t follow the standard at all. It’s the same when google maps changed their implementation of Map API and it causes more issues, the preview can’t capture that javascript generated by map embed code (it’s generated on the fly).
Hence, it always depends on the scripts you’re implementing. The builder is just there ready to capture the scripts you’re implementing.
All I could do for now is add this to our issue tracker.
Thanks!