FileLottie never hit LottieCache, because FileLottie's hashCode() method return file.hashcode, not file.path.hashcode.

class FileLottie extends LottieProvider {
FileLottie(
Object file, {
super.imageProviderFactory,
super.decoder,
super.backgroundLoading,
}) : file = file as io.File,
assert(
!kIsWeb,
'Lottie.file is not supported on Flutter Web. '
'Consider using either Lottie.asset or Lottie.network instead.',
);

final io.File file;

...

@OverRide
bool operator ==(Object other) {
if (other.runtimeType != runtimeType) return false;
return other is FileLottie && file.path == other.file.path;
}

@OverRide
int get hashCode => file.hashCode;

@OverRide
String toString() => '$runtimeType(file: ${file.path})';
}
}