When you change driver (look of driver) and/or numberplate during race in SP. In replay there will be only last one used during whole session.

This was reported already by me and Flame CZE.

hmm, no

1. Your report is about wrong numberplate when having multiple drivers in SP.
2. Flame's report is just about helmet staying the same in MP.

Maybe I'm wrong, but it seems to me that this is still the same bug, bug in replay recorder.

Quote from adamshl :

Maybe I'm wrong, but it seems to me that this is still the same bug, bug in replay recorder.

It may be the same kind of bug, but Scawen might not have fixed it along with this one.