Spirit Of Steam Teaser 3 Second Mark 45630 Main Wheels?

Did anyone notice the 45630 main driving wheels appear to be sitting on the ties instead of the rails?Yet other shots show the wheels correctly on rails so why would the route have any track gauged to small for this train?

 

Possible mistake maybe I mean I hope its just the case that when making the trailer stuff is still being worked on heavily but who knows

 

I think I know. It’s because it’s ‘work in progress’