In another case, a forum member had the contents of his ticket wallet confiscated by Southern Rail (now GTR) RPIs because he was using the new style tickets when they were not issued in the South and they hadn't seen them before, so assumed they were fake tickets.
ATOC/RDG must shoulder some of the blame for this. It's quite astounding that we have many different formats for the same ticket now.
Those issued at a ticket office, of which many now have Aztec codes and the layout has been modified to fit.
Those issued on older TVM software, of the type that most staff (and passengers) understand.
The new type from TVMs, which have changed a few times since their introduction, meaning that the literature I got on the new format isn't even correct any more.
Staff should be more aware than customers, but I have a little sympathy when there's so little information out there.