Pro Sites conflict with Geo Directory in a select control in wp-admin

There's a confict when Pro Sites plugin is turned on. In the Geo Directory settings page here:
/wp-admin/admin.php?page=geodirectory&tab=gd_fire_department_fields_settings&subtab=custom_fields&listing_type=gd_fire_department

screenshot: https://monosnap.com/file/5gpB5W1xDimr5jzZrtidsZqAA7ExFW