Dropdown in Forminator form on Hustle pop up not working

I’m having an issue with a Forminator form drop down not showing correctly in a Hustle pop up on this page (click on “Complete our Safeside Enquiry Form”:wink::

https://www.w****.net/our-services/safeside/smart-choices/

The form actually can pop up from several pages that we have a button on that triggers the form.

However, in all cases, the first question, a select drop down, appears to come up greyed out behind the form, rather than on the form itself, preventing you from selecting an option.