I have experienced auto-stop failure when filling at high speed as well as low.
I have also had auto-stop only fill the tank halfway up. Even on the "second click", because I didn't believe we had used so little fuel. (I was riding with friends on a long trip in their car, which I was not familiar with.)
The auto shut-off is not consistent, even on the same pump, in my experience.
I have had problems (sputtering, loss of power, other misbehavior) when filling from a station that was being resupplied when I filled. I think it was more due to water in the fuel (which will get through filters!) than dirt. The car got much better after I had burned through that tank.
If I recall the difference in density between gasoline at 50F versus 90F, you got something like 0.1% less fuel at the higher temperatures. Low enough to be "in the noise".
-soD