Auto sign-in after auto-fill "clicks" wrong button

Yeah, I agree tsdorsey . It's one thing that this kind of feature might have a couple edge cases where it won't work reliably, but the current implementation isn't even a best-effort approach. Preferring a type=submit button (if present) seems so obvious and simple to implement that it's surprising to me that the current implementation made it to general rollout. That alone would probably fix it for the vast majority of people are having an issue with this, even if for the rest a per-site setting would probably still be good to have.