Hi, this is corrected in my "developer version" and will be in next update. There's always a chance that some other situations in the contour code will malfunction after my editing but I'll deal with that later If it happens.
I can't put a date for the update, I need to finish the Vehicle Turning Simulation command first. I was to optimistic in the complexity of all kinds of vehicles, my plan was to support three types but this is now extended. In some countries booth double trailer and triple trailer are common vehicles and CadTools need to manage them to.