I’m sorry to say this but I genuinely don’t think this will get updated. Was Manchester Commuter ever patched? Sorry but I think they’ve had your money and run. It could have been removed from sale until fixed, I don’t believe it has been. Fortunately I refunded within minutes of buying because of just how bad it was.
I'm still glad I didn't give this DLC my money. I learnt my lesson with the Nuclear Flask Skyhook DLC and the unreleased patches.
MAC received 2 updates as I recall, one to fix the weird ballast mounds & improve performance, along with a few other fixes, then another which introduced TSW6 features such as announcements, further performance increases & additional layers. In terms of the class 90 situation, it seems to have been lumped in with everything else that has been released in 2026 & thus isn’t getting any updates so far.
