[Steven Zahm]

@ Kegan

<style id="custom-css-css">.p-landmark-sub,.p-meta,input,button,select,textarea{display:none}.x-portfolio-filters-menu{display:none !important}.x-portfolio-filters{display:none}</style>

Looks like some CSS is being loaded which hides selects, the relevant part, meta,input,button,select,textarea{display:none}

Just purely on the style id, this is custom CSS that perhaps was added inadvertently. That style will literally hide all text inputs, drop downs, radios selects, buttons and text areas by default. This will very, likely break all sorts of things so I suggest removing it if you can.