I just picked up a 2021 ST today, (10-08-21), and I do see that the outboard drivers side seat panel is a DIFFERENT design than my wife's 2020 ST which has broken 5 times already. As of this writing, it broke again last week, and I will once again bring it in for another repair. An awful design flaw that is very frustrating. I will say that the positive news here is that Ford "got the message" and did something about it here in late 2021. I literally looked at the seat design at the first glance of the vehicle to see if it is different, and sure enough, it is!