Custom fields not showing on drop-down

Hi, I’ve been having issues with the Directory theme regarding adding custom fields. Before, its perfectly fine to add new fields and then going to Advanced Search to a custom field.

There is no problem adding a custom field in the Listing Setup tab, but when I create a new custom field in Advanced Search, it’s now showing in the “Search field” drop-down, so I couldn’t choose the new custom field I’ve created from the “Listing Setup”

Please help and fix this bug. I have the latest Directory theme version