Jfoenix JFXToggleButton does not provide switch appearance - javafx-8

Question

I am learning how to use JFoenix with Java FX.
I am using it from SceneBuilder so the only code I can show is that one :
<?xml version="1.0" encoding="UTF-8"?>
<?import com.jfoenix.controls.JFXToggleButton?>
<?import javafx.scene.control.SplitPane?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.Pane?>
<?import javafx.scene.layout.VBox?>
<SplitPane id="sp_main" dividerPositions="0.29797979797979796" maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0" xmlns:fx="http://javafx.com/fxml/1" xmlns="http://javafx.com/javafx/8.0.171">
<items>
<AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="160.0" prefWidth="100.0">
<children>
<VBox layoutX="-1.0" prefHeight="398.0" prefWidth="174.0">
<children>
<Pane prefHeight="200.0" prefWidth="200.0" />
<Pane prefHeight="200.0" prefWidth="200.0" />
<Pane id="p_action" prefHeight="200.0" prefWidth="200.0">
<children>
<VBox prefHeight="200.0" prefWidth="100.0" />
<JFXToggleButton />
</children>
</Pane>
</children>
</VBox>
</children></AnchorPane>
<AnchorPane minHeight="0.0" minWidth="0.0" prefHeight="160.0" prefWidth="100.0" />
</items>
</SplitPane>
According to the documentation when we the componenet JFXToggleButton whe should have some sort of switch button like :
But this is not what I have on my side, all I can get is a simple Toggle Button like :
Is there something I am missing ? Thanks a lot.
Note :
JavaFX Scene Builder 8.5.0
JFoenix 8.0.7 added manually from Library Manager with Maven
Documentation : https://github.com/jfoenixadmin/JFoenix/wiki/Toggle-Button#JFXButton

Answer 1

I'll post this as an answer as this is definitely weird...
When I finally run my application it is giving the correct output, it seems that using preview option of scene builder does not render it.