So to update my post, I made this drive today.I just got the notification, too. Very surprising.
I only got into the FSD program in May and definitely not influential. I have a drive on a rural highway I do once or twice a week that has two well marked, four way stop intersections that I don't turn on. One intersection has stop signs; the other has stop signs with large, overhead flashing red lights. FSD doesn't even think about slowing down or stopping.
On the same drive, I have another intersection with a stop sign and a left turn. FSD proceeds to the middle of the intersecting road and stops.
I've pressed the record button several times to send this behavior to Tesla. It will be interesting to see what happens next time.
The ULT where FSD stopped every time in the middle of the road worked perfectly tonight.
The two four-way stops were better but far from satisfactory. Before, FSD would barrel right through. Tonight, I got hard, last minute braking but not enough to stop before the intersection. I had to take over and manually brake with anti-skid on dry pavement to stop in time.
Also, before this update, FSD would frequently drift over the center yellow lines on curves on this drive. I saw none of that today.