What caused the bizarre penalty confusion in Jeddah?

Red Bull's tag as Championship favourite was underlined by a one-two finish in a fearsome display of speed at the Jeddah Corniche Circuit. Sergio Perez triumphed on the Saudi Arabian streets ahead of a frustrated Max Verstappen, but reliability concerns remain with the RB19 cars. The big talking point was undoubtedly the decision-making going on behind the scenes, as Fernando Alonso was penalised and told to hand over his podium trophy, before being reinstated long after the chequered flag....