What happened?

The release of Flutter 3.16.0 introduced something that caught me out and broke the theme in the Pi Garage companion mobile app.

lthough Material 3 has been “opt in” for quite a while (I couldn’t find since when) it is only in 3.16.0 breaking changes you can see that this version has flipped the default value for the flag (useMaterial3) from false to true.

In the Pi Garage mobile app I did not set this flag to false when it was introduced as well as I didn’t lock the version of Flutter in the GitHub action that built and deployed the Android and iOS apps.