Select component throws TypeError: cannot read property 'initLazy' of undef

Setup: Vaadin Designer
Empty page

Hi everyone,

I want to use a select component for my menu.
But as soon as I add one it throws a TypeError. Im binding the select to my polymerTemplate.

Does anyone know how to work around this issue?

my Select:

@Id("bangkok")
private Select<String> bangkok;

Kind regards,

Sjoerd Brauer