Below is a link to a screenshot of both the front end and back end of the custom field I have created. The back end as you can see the values have been delimited by the correct symbol but in the front end only one of the counties shows up in the dropdown.
As already answered in your ticket (double support posts are not needed please)...
This is because you haven't setup the field properly. The selection limits is not configured. Watch our video tutorial on custom selection fields to learn how to set it up correctly. Once it is fixed, your field values will display as expected. Thanks.