Ticket #27599: 27599.patch

wp-content/themes/twentyfourteen/js/featured-content-admin.js

@@ -5 +5 @@
 /* global ajaxurl:true */
 
 jQuery( document ).ready( function( $ ) {
-        $( '#customize-control-featured-content-tag-name input' ).suggest( ajaxurl + '?action=ajax-tag-search&tax=post_tag', { delay: 500, minchars: 2 } );
+        $( '#customize-control-featured-content-tag-name input' ).suggest( ajaxurl + '?action=ajax-tag-search&tax=post_tag', { delay: 500, minchars: 2, onSelect: function() { $( this ).change() } } );
 });