A minor UX improvement when tabbing to a select component

I have an address section with components for street, city, state and zip. The state is a dropdown (select). My user types in the street address, tabs, types the city, tabs and then is stuck in state. Typing does not open and begin matching as she would expect.

I played around a bit and if you click the down arrow, the drop down opens and you can start typing. Would be nice if you could get rid of the extra keystroke.