No content in table scroll-bar should come - scrollbar

Question

When I am having data in the tableview (which is custom component), then horizontal scrollbar is visible, but if there will no data and only columns are there then scroll-bar is not visible.
Is it because of custom component I made or my FXML needs some changes.
FXML
<AnchorPane stylesheets="prj.css" xmlns="http://javafx.com/javafx/8" xmlns:fx="http://javafx.com/fxml/1">
<children>
<VBox AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0" >
<children>
<ScrollPane fitToHeight="true" fitToWidth="true" VBox.vgrow="ALWAYS">
<content>
<prjTableView minWidth="500.0" maxWidth="500.0" prefWidth="500.0" VBox.vgrow="ALWAYS" fx:id="treeTableView" AnchorPane.bottomAnchor="0.0" AnchorPane.leftAnchor="0.0" AnchorPane.rightAnchor="0.0" AnchorPane.topAnchor="0.0">
<styleClass>
<String fx:value="k-table-view" />
<String fx:value="redBorder" />
</styleClass>
</prjTreeTableView>
</content>
</ScrollPane>
<HBox alignment="BASELINE_LEFT">
<children>
<HBox>
<children>
<Label text="Page Size">
<HBox.margin>
<Insets left="2.0" top="5.0" />
</HBox.margin>
</Label>
<TextField fx:id="itemsPerPage" maxWidth="-Infinity"
minWidth="-Infinity" prefHeight="22.0" prefWidth="40.0" text="50">
<HBox.margin>
<Insets left="8.0" top="6.0" />
</HBox.margin>
<tooltip>
<Tooltip text="Enter desired page number" />
</tooltip>
</TextField>
<Pagination fx:id="pagination" maxWidth="-Infinity"
minWidth="-Infinity" prefHeight="42.0" prefWidth="235.0"
translateX="1.0" translateY="1.0">
<HBox.margin>
<Insets />
</HBox.margin>
</Pagination>
<Label fx:id="displayInfo">
<HBox.margin>
<Insets top="5.0" />
</HBox.margin>
</Label>
</children>
</HBox>
</children>
</HBox>
</children>
</VBox>
</children>
</AnchorPane>