Bug/Issue Formation Designer Not Registering Creators Club Liveries

I like making custom liveries on TSW, not based off anything in real life, and pairing multiple trains together with these liveries to go with the creativity aspect. However, I have recently noticed that some trains, specifically from my experiences, the Class 170/4, and Mk2f coaches don't show these liveries. This is a shame, as it would look cool with multiple trains coupled together doing these services.