Unfortunately no it happens in all missions

Hi GTA community so I'm training 100% casual run at x360, so I'm using the cab to go to the majority of missions. I call the taxi, he comes, I go to the mission with him and I call him back before enter the mission. But when I skipped the cutsene and go to enter in the back, he isn't even there, just the driver stopped at the middle of the street. Is it really a bug or Im doing something wrong?