Aw, its unfortunate the build had some issues with chrome, I guess that is the risk when developing games with low level languages like Rust. Must be a pain dealing with different behaviours in different browsers.
I unfortunately don’t remember the details for the crash that occured, and I fear I can’t help you reproduce it. I know I had a few trains moving and the pink train kept taking the right track at the station with a double track when exiting, and I had to rewind a few times before it ultimately crashed