macOS and iOS text and shadow rendering differences

[luc...@gmail.com]

I'm building something like storybook but for Flutter and I want to render on desktop what the app would like like on a phone.
By overriding MediaQueryData with the values I get on the phone and the TargetPlatform with the correct one I was able to get Android rendering pixel perfect.

But, no matter what, iOS is not rendering correctly.
I printed the ThemeData for on both cases and even though they're given the same ThemeData text rendering is still different.

I opened an issue on github and uploaded some pictures there because it seems this is a bug and not something I'm not configuring correctly: https://github.com/flutter/flutter/issues/39542

But am I forgetting to override something to make them work correctly?