Hi,
Please note that you can edit your own message if you want to add something.
About your problem, I think you have a special plugin which "optimize", "minify" or do something with the javascript on the page (plugin which can be a part of your template, hard to say like that).
There is some javascript in the page in order to initialize the popup, this code is a "classical" jquery code
<script>jQuery('#modal-shop_terms_and_cond').on('show', function() {
document.getElementById('modal-shop_terms_and_cond-container').innerHTML = '<div ........... ';
});
</script>
There is no way that you'll only see '; });' unless something is modifying the rendering HTML.
I recommend you to check the javascript error log of your browser in order to get more details.
I also recommend you to try another popup mode in your HikaShop configuration.
Regards,