A cousin of mine had a brand new Jag E-Pace a few years ago and it was only noticed about three months later that the registration on the front was different to the one on the back.Nice car, welcome back.
Funnily enough I had a boss once that was involved in a car crash with his Leon FR. The front plate started "AD56" and the rear plate started "AJ56" and none of us noticed. It was only caught when the police attended the scene of the accident and pointed it out. No issue, the car was all legal and the lease company had made a blunder.