It is very bad at handling ambiguity when the road has both white and yellow navigation lines. There's a number of scenarios, some of which involve criss-crossing lines, some where they run mostly in parallel.
The car sometimes wants to follow the white lines when the yellow are actually overrides. When the yellow lines are wrong (and should rightfully have been scraped off), this always leads to disengagement. For stretches where the yellow lines are correct, and the older white lines are off by half a meter so that there's effectively not enough space between the white lines and the concrete side, autosteer will sometimes try to switch to the white lines, which would lead to the car smashing into the concrete side.
And sure, autosteer != FSD. But it's a much simpler problem that the Tesla still basically fails at.
Sometimes, in fog, cruise-control will abrubtly break. Very nerve-wrecking.
Relying fully on vision has its downside. Listening to Kaparthy on Lex Fridman's podcast, it sounds like this was cost-cutting. I can't believe that "nope, that big white thing isn't a wall" is not objectively better navigation.