jQuery Forum

input.data( "autocomplete" )._renderItem = function( ul, item ) {
 return $( "<li>" )
 .data( "item.autocomplete", item )
 .append( "<a>" + item.label + "</a>" )
 .appendTo( ul );
 });
Looking around, I found a possible solution:

var obj = input.data( "autocomplete" );
 obj && (obj._renderItem = function( ul, item ) {
 return $( "<li>" )
 .data( "item.autocomplete", item )
 .append( "<a>" + item.label + "</a>" )
 .appendTo( ul );
 });
But that only makes the map going smoothly, but the combobox still malfunctioning.