Autocomplete component doesn't work

[adamxi]

I'm using the autocomplete component with an angular app, and currently the component seems broken.
When expanding the "Choices" and "Choices from Web" options, the menu items are duplicated and seems bugged.
Also im getting an error when expanding the Choices from Web dropdown

[tsv2013]

Can you share the live sample illustrating the issue or the steps to reproduce it?