I have found a few flaws between flawless drives. Certainly doesn't need nearly the interventions as 12.x. But, like others, I've seen this:
1. red hands warning to takeover immediately when the car turned into the setting sun in a parking lot. I was very confused as the car had mastered everything for the past few days, and we were basically stopped already when it happened. Happened once, and it was the only FSD fail I've seen from v13. Living in Phoenix, this could be a problem.
2. navigation issues. with 13.x, they seem worse than before. There seems to be a mismatch at times between the maps we see and what FSD sees.
3. parking lot issues, mostly related to getting out efficiently
4. inconsistent parking at the end of a drive - sometimes it parks, sometimes not. Seems only to park in limited situations, and the times it backed into places for me, I had to park. Doesn't use the Park Assist software.
5. puts on annoying and wrong turn signals when the road curves, but you don't actually change lanes (will it do this for every turn on Lombard Street in San Francisco?)
New stuff:
backs out of parking spots, including my garage
properly handles my gates coming and going
sometimes parks itself at the end of a trip. Parks in front of my house when I go home. But not into the garage.
is faster at stop signs (well, faster everywhere)
is faster in slow turns
is generally fast enough to keep up with traffic
doesn't freak out at hooded stoplights, or brick pavers
drives smoother than I can, even if I have it on chill and try my best
generally now makes lane changes enough ahead of time to not have to worry about it
V13.2.1 doesn't drive like a robot programmed to drive, it feels like a brain tailored to its environment, and it often thinks faster than you. It displays a mastery of driving that becomes obvious as you ride along. Not in parking lots, and not when the mapping is wonky, but enough to relax. I want to drive on empty canyon roads. I never wanted to drive in parking lots and city traffic, where you have to have your head on a swivel. It's so nice to be driven!