maven-client-plugin, GraalVM and class initialization

Question

I am trying to generate a native image of a JavaFX+FXML application using the GluonHQ client-maven-plugin. Creating the native image works fine, but when trying to execute it, it seems my configuration was wrong.

FXML

<?import java.lang.*?>

<?import org.prelle.javafx.NavigationView?>
<?import org.prelle.javafx.NavigationItem?>
<?import org.prelle.javafx.NavigationItemHeader?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.control.TextArea?>
<?import javafx.scene.control.SeparatorMenuItem?>
<?import javafx.scene.layout.FlowPane?>

<NavigationView xmlns:fx="http://javafx.com/fxml"
    stylesheets="@styles.css"
    displayMode="AUTO">
</NavigationView>

The execution fails with org.apache.logging.log4j.message.ParameterizedMessageFactory ClassNotFoundException: org.prelle.javafx.NavigationView

Now I tried to add my reflectionconfig.json

[
  {
    "name" : "org.prelle.javafx.NavigationView",
    "allDeclaredConstructors" : true,
    "allPublicConstructors" : true
  }
]

The problem now is that it doesn't compile annymore. Instead I get 3 errors for classses that have been unintentionally initialized at build time - e.g. javafx.scene.control.SkinBase or the skin for my class org.prelle.javafx.skin.NavigationViewSkin

My NavigationView constructor explicitly sets the skin to NavigationViewSkin, so calling the empty constructor will call the skins constructor as well.

What did I do wrong? How can I avoid those errors?

Edit: I failed to notice that I copied an older error message (from having problems with Log4J2). Changed it.