Native select auto selecting an item without a click

I am using native select from Vaadin 6.8.10
When clicking on a native select and viewing the items it selects an option without a click.
It does not fire the listener to get the results only closes the dropdown items and makes you have to reopen it again.
I believe it may be a race condition.

I am creating portlets in liferay and having this side-effect.
Has anyone come across this before or found a solution to it?
Are there any settings I can use to prevent this condition?

Thanks in advance!