If you run the app, you will see that last zero of label "5000" is rendered outside of control bounds.

import javafx.application.Application;
import javafx.geometry.Orientation;
import javafx.scene.Scene;
import javafx.scene.control.Slider;
import javafx.scene.layout.HBox;
import javafx.stage.Stage;

public class TestSlider extends Application {
    
    int SLOT_WIDTH = 150;
    int SLOT_HEIGHT = 150;
    
    @Override
    public void start(Stage primaryStage) {

        Slider slider = new Slider(0, 5000, 1000);
        slider.setShowTickMarks(true);
        slider.setShowTickLabels(true);
        slider.setMajorTickUnit(1250);
        slider.setMinorTickCount(5);
        slider.setStyle("-fx-border-color: red");
        slider.setOrientation(Orientation.HORIZONTAL);
        slider.setPrefSize(SLOT_WIDTH, SLOT_HEIGHT);
        slider.setMaxSize(SLOT_WIDTH, SLOT_HEIGHT);
        slider.setMinSize(SLOT_WIDTH, SLOT_HEIGHT);
        
        HBox root = new HBox(20d);
        root.getChildren().add(slider);
        
        Scene scene = new Scene(root, 600, 400);
        primaryStage.setScene(scene);
        
        primaryStage.setTitle(System.getProperty("java.runtime.version") + "; " + System.getProperty("javafx.runtime.version"));
        primaryStage.show();
    }

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