import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.ProgressIndicator;
import javafx.scene.layout.GridPane;
import javafx.stage.Stage;

public class Bug extends Application {
    @Override public void start(Stage stage) {
        
        ProgressIndicator progressIndicatorOriginal = new ProgressIndicator(-1);
        ProgressIndicator progressIndicator = new ProgressIndicator(-1);
        
        progressIndicator.getStylesheets().add("Bug.css");
        
        GridPane gridPane = new GridPane();
        gridPane.addRow(0, new Label("Original"), new Label("With CSS"));
        gridPane.addRow(1, progressIndicatorOriginal, progressIndicator);
        
        Scene scene = new Scene(gridPane);
        
        stage.setTitle("Bug");
        stage.setScene(scene);
        stage.show();
    }

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