When the UseMaterial3 MSBuild property is enabled, the Picker control is expected to follow the Material 3 design system; however, the current implementation does not fully reflect Material 3 behavior, as it lacks Material 3–specific dialog theming, enhanced selection list styling, updated text input field appearance, proper state visuals, and Material 3 theme resource integration. It should also use the appropriate Material 3 theme resources to ensure visual consistency.