JFoenix 9.0.0: Unable to load CSS-File directly

I just created a simple Application using Java 9.0.1:

/**
 * @author w.glanzer, 20.12.2017.
 */
public class TestApplication extends Application
{
  @Override
  public void start(Stage primaryStage)
  {
    Scene scene = new Scene(new BorderPane());
    
    // TestApplication.class.getResource("/css/jfoenix-design.css") => NULL
    // ModuleLayer.boot().findModule("com.jfoenix").get().getResourceAsStream("/css/jfoenix-design.css"); => NULL
    String jfoenixCSSPath = TestApplication.class.getResource("/css/jfoenix-design.css").toExternalForm();
    scene.getStylesheets().add(jfoenixCSSPath);
    primaryStage.setScene(scene);
    primaryStage.show();
  }
}

How to load the provided “jfoenix-design.css” correctly? All ways I try returning null. Is it obsolete to add the provided css to my scene?

EDIT: I used the new deployed 9.0.0 from MavenCentral.

My module-info:

module com.github.wglanzer.test {
  requires javafx.base;
  requires javafx.graphics;
  requires com.jfoenix;

  exports com.github.wglanzer.test;
}

[jfoenixadmin]

not sure yet about the change, however the artifact 9.0.0 is still useful. “jfoenix-deisgn.css” is not used in jfoenix core, it’s just an additional css so you can use material design color naming in your project. You can copy the file and add it to your project manually.

[jfoenixadmin]

we refactored the css files in the latest version of JFoenix, 9.0.6, however not sure if this solved the issue (didn’t test it)