iiro 5/19/2020 6:11 AM My code initially looked like this: final constrainedTextScaleFactor = mediaQueryData.textScaleFactor.clamp(1, 1.5); The problem? This is the type signature of clamp(): num clamp(num lowerLimit, num upperLimit); I had assumed that clamp just works with doubles or ints. So if the system textScaleFactor was less than 1.0, the clamp method returned 1 - which is an integer. And MediaQueryData requires it to be a double. That silly bug meant that a lot of users weren't able to do anything with the app - it just crashed.