FTWIW the keys' hitboxes aren't at the displayed area, but at the expected landing area.

I'm slightly making up the exact bias, but for instance it will be assumed the user lands a touch slightly above the actual key, as the finger hides the target and Apple's heuristics expect some overshooting.

In comparison people used to the iPhone's heuristics might have a harder time on android.

If this is true it seems like a terrible idea. And even worse that it can't be disabled.

Does this happen with all iOS keyboards?