Item always highlighted

[conyg]

Most of the themes seems to present first item in the list highlighted before user makes any selection.
Also the last item remain highlighted (active) after user clear selection.

This can be observed on most of the demos like: https://angular-ui.github.io/ui-select/demo-bootstrap.html

Version of Angular, UI-Select, and Bootstrap/Select2/Selectize CSS

Angular:
1.5.0

UI-Select:
0.19.8

Bootstrap/Select2/Selectize CSS (if applicable):
3.1.1

Attached I put a screenshot after clearing selection (Samantha was previously selected)