Can you help with a position problem with the street pop-up list?

Yes. When you are using fixed positioning with the address element, or one of its parent elements, you can encounter a problem with the position of the street pop-up list. For example, it might be fine if you’re at the top of the page, but might not pop-up where it’s supposed to if you scroll down.

You can set the option position to fixed so that the pop-up remains attached to the address input element.

  
  var widget = new AddressFinder.Widget(
    document.getElementById("address_field"),
    "XYU7FK4REMPDTWH3NQAV",
    {position:"fixed"}
  );
  

Here’s a jsFiddle example showing the behaviour.