When focus is getting out of autocomplete list, the input value should resume default

[Saare]

(Using the current demo ​http://jqueryui.com/demos/autocomplete/)
When the user is taking the caret out of the autocomplete options list, he expects the input to resume the original content in the list. otherwise, whenever you just check the list with the caret, you loose what you have already written.
It should at least be configurable.

[Scott González]

What you're asking for is the current behavior. If you use the arrow keys to go through the options list and then reach the end of the list, you'll go back into the text field and the value will return to what you had typed.