I agree with Michael it’s annoying, I have had this happen before at other stations when I have had to collect something from a shop and ended up with a circular journey same station exit. Customer services said it happens quite regularly, although it might be a small number it’s still annoying.
IMHO The system should be able to realise that it is two journeys and split the journey as part of backend processing. Though if there are multiple OSIs in the same journey that can get problematic for the system.
