Anyone got the JustTrains JJA Autoballaster pack? (It's good btw.) There's a scenario included on ECML Newcastle - York, "JT JJA - Ballast for Ferryhill". You will not be able to finish this one, as once you're on the mainline your train will derail as the dispatcher changes a point while your train is over it. The reason is a missing AddToBack instruction at Tyne Yard, causing the dispatcher to think you're still running light engine, as the instruction to couple to the JJAs is only given via textbox, not game instruction. Adding the instruction to the scenario will make it work.
I noticed that first on one of my favourite ever scenarios for Weardale & Teesdale (loads of action). https://steamcommunity.com/sharedfiles/filedetails/?id=891466337 Not.Silent has often done without coupling instructions, just telling the player what to do. This led to my train derailing after leaving the colliery with my load. (It happened before the core updates too - depending on how quick you were off the mark).
Tbh I rarely play workshop scenarios these days even though I have indeed played not.silent ones in the past, I genuinely can't remember the last time I had a train derailment but this sort of knowledge nestles at the back of your mind somewhere and if/when it does happen you think "ahh I know how to fix this", so thanks for sharing.