Xbox Series S Wcml Preston Crewe Missing Layers

Anyone experiencing a phenomenon where the coaching stock lacks variety in timetable mode? Every time I spawn or see a train, it has either full MK3s (IC and BR) or full BR blue MK2s, both always in the exact same formation. Also, the Class 142 doesn't substitute into the timetable, which I think it's supposed to?

I think at its core, the problem has to do with content sharing between the Blackpool Branches route and the Preston - Crewe route, since the WCML Preston - Carlisle stock appears just fine.