this is probably the next duplicate for JDK-8159963, so filing separately just to check the case after the fix.

Ubuntu 16.04 (Unity) + HiDPI, JDK9 b135.

Please run the following code:

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.web.HTMLEditor;
import javafx.stage.Stage;

public class HTMLEditorSample extends Application {

    @Override
    public void start(Stage stage) {
        stage.setWidth(300);
        stage.setHeight(300);
        final HTMLEditor htmlEditor = new HTMLEditor();
        htmlEditor.setPrefHeight(245);
        Scene scene = new Scene(htmlEditor);
        stage.setScene(scene);
        stage.show();
    }

    public static void main(String[] args) { launch(args); }
}

the ">>" buttons in the right corners of the toolbars are not navigable.


the issue isn't reproducible on a non-HiDPI machine with the same OS.
JDK 8: not applicable, as there are no ">>" buttons