Maybe, I’m not sure exactly how that would be counted. But on the other apparatus the routine is judged from takeoff on the mount or I think when the gymnast starts on floor, so if someone just got up on the bars and then jumped off or did a few steps of choreo on floor they would have started so they should have a score? There is a specified neutral deduction in the code for a routine with no elements. The FIG would surely find a way to prevent it though.