A DESCRIPTION OF THE PROBLEM :
I have old application on jfx bundled with oracle jdk 1.8 working fine.

i have upgraded it to the latest jfx14 but found the following issue:

TreeView.getSelectionModel().getSelectedItem() returns null even though that
TreeView.getSelectionModel().getSelectedItems().size() = 1

the issue happens only when programmatically select a tree node using:
*************************
tree.getSelectionModel().clearSelection();
tree.getSelectionModel().select(node);




REGRESSION : Last worked in version 8u241

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the sample code

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -

TreeView.getSelectionModel().getSelectedItem() to return the selected node object
ACTUAL -

TreeView.getSelectionModel().getSelectedItem() return null

---------- BEGIN SOURCE ----------
import javafx.application.Application;
import javafx.collections.ListChangeListener;
import javafx.scene.Scene;
import javafx.scene.control.TreeItem;
import javafx.scene.control.TreeView;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class TreeViewExample extends Application
{
    public static void main(String[] args)
    {
        launch(args);
    }

    @Override
    public void start(Stage primaryStage)
    {
        TreeItem<String> rootItem = new TreeItem<>("Tutorials");
        TreeItem<String> javaItem = new TreeItem<>("Java Tutorials");
        TreeItem<String> javaItem2 = new TreeItem<>("Java Language");
        TreeItem<String> javaItem3 = new TreeItem<>("Java Collections");
        TreeItem<String> javaItem4 = new TreeItem<>("Java Concurrency");
        javaItem.getChildren().add(javaItem2);
        javaItem.getChildren().add(javaItem3);
        javaItem.getChildren().add(javaItem4);
        rootItem.getChildren().add(javaItem);

        TreeView<String> treeView = new TreeView<>();
        treeView.setRoot(rootItem);

        treeView.setShowRoot(false);

        VBox vbox = new VBox(treeView);
        Scene scene = new Scene(vbox);
        primaryStage.setScene(scene);
        primaryStage.show();

        treeView.getSelectionModel().getSelectedItems().addListener(new ListChangeListener<TreeItem<String>>()
        {
            @Override
            public void onChanged(Change<? extends TreeItem<String>> change)
            {
                int i = treeView.getSelectionModel().getSelectedItems().size();
                System.out.println(i); // i =1

                TreeItem<String> node = treeView.getSelectionModel().getSelectedItem();
                if (node == null)
                    System.out.println("node is null"); // In javafx-14 with jdk-14
                else
                    System.out.println("node is not null"); // in javafx bundled with jdk-8
            }
        });

        treeView.getSelectionModel().clearSelection();
        treeView.getSelectionModel().select(javaItem3);

        final int row = treeView.getRow(javaItem3);
        treeView.scrollTo(row);
    }
}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
use the older javafx bundled with 1.8

FREQUENCY : always