Boiler Phasing

I’ve run into a persistent issue where the boiler mesh appears to phase through the cab interior on multiple Smokebox steam locomotives — specifically the Big Boy, Challenger, and FEF‑3.

 

The only "Mesh" I cab see in the picture is the floor of the loco
Which is what is supposed to be there - like a checker plate for foot grip

 

Well, the firebox is out of place and it's not how it looks now for me

 

Apart from it is a difficult picture to see I have no idea

 

Now i don't even care about it now