Steam Multiple Problems With Spawned British Diesels In Freeroam

every British diesel I own bar the class 66 , 52 and green 47 have reversers that are completely unmovable (class 20 37 47 (blue) 40 GWR 43 and 45) i am unable to spawn the class 31 despite owning it. the class 66 randomly shuts down when loading saves and will not start again. locos often randomly derail and fly away when connecting to stock and the green 47 will rev and produce amps but will not move. the class 150 spawns with an invisible brake handle but is operable.

these locos and units work perfectly fine when playing in scenarios but break the moment I spawn them