Autocomplete: Same code, different results

Autocomplete: Same code, different results

Hello, how is it posible? I have written the same code in two sites, and the result is different.

Code 1: http://jsfiddle.net/uMqyn/518/

Code 2: http://jsfiddle.net/uMqyn/519/

The only change I made is the external JS/CSS included in Code 2.