Thank you, @Nabeel… Because of your recommendation, I found the culprit. Because I use Boostrap modal… I have a function (in functions.php) that adds to the header. Here is the offensive piece of code:
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js" integrity="sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn" crossorigin="anonymous"></script>
This code was copied directly off of Bootstrap’s download page. Apparently Bootstrap 4 is not playing nice with your theme. I will downgrade to load Bootstrap 3 and see what happens. But, your development team should dive into this issue and resolve whatever conflicts are going on, as Bootstrap modals are very popular. Just suggesting.
I’ll post my findings regarding Bootstrap 3… Thanks again, @Nabeel