This is something I noticed when it popped open the formation designer for the first time and it appears that 3 of TSW's 4 steam engines aren't currently able to be selected in the formation editor and in most cases, it's only the tender that shows up. This applies to the following locos (with images for evidence): LMS 4F from Peak Forest: LMS 8F (Only the Training Centre version, the main versions from Peak Forest & Liverpool-Crewe are currently not selectable): LMS Jubilee (Only the Peak Forest version. The Liverpool-Crewe version is absent, along with the pair that came with the West Cornwall Railtour Pack): It seems like only Flying Scotsman is fully selectable right now, but other than that, it's quite disappointing that the grand majority of TSW's steam fleet isn't showing in the formation designer and needs to the addressed as soon as possible.
I know it's not steam stock (although it's old enough to be) but I couldn't see 1938 Bakerloo line stock either?