ADDITIONAL SYSTEM INFORMATION :
Windows 10,
Java 11 and onward

A DESCRIPTION OF THE PROBLEM :
The ListChangeListener of a ListView does not see the actual selected index and item if the selection is made programmatically by calling listView.getSelectionModel().select().

The reason is that in the implementation of MultipleSelectionModelBase#select(int), the line

selectedIndices.set(row)

already fires the change listeners, before the setSelectedIndex and setSelectedItem methods are called. This was different in JDK 8.

REGRESSION : Last worked in version 8

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Create a ListChangeListener, which uses the selected index of the SelectionModel of a ListView and register the ListChangeListener at the selection model of the ListView.

After a call to the method listView.getSelectionModel().select to change observe the selected index.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The ListChangeListener will report the actual selection.
ACTUAL -
The ListChangeListener will report the previous selection or -1/null in the initial case.

---------- BEGIN SOURCE ----------
import javafx.application.Application;
import javafx.collections.ListChangeListener;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ListView;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;


public class ListViewTest extends Application {
    @Override
    public void start(Stage stage) {
        BorderPane root = new BorderPane();
        ListView<String> listView = new ListView<>();
        listView.getItems().addAll("a", "b", "c");
        root.setCenter(listView);
        ListChangeListener<String> listener = change -> {
            System.out.println(listView.getSelectionModel().getSelectedIndex() + " index");
            System.out.println(listView.getSelectionModel().getSelectedItem() + " item");
        };
        listView.getSelectionModel().getSelectedItems().addListener(listener);

        Button button = new Button("Select c");
        button.setOnAction(ev-> listView.getSelectionModel().select("c"));
        root.setBottom(button);
        Scene scene = new Scene(root);

        stage.setTitle("ListView Test");
        stage.setScene(scene);
        stage.show();
    }
    public static void main(String[] args) {
        launch(args);
    }
}

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Don't use listView.getSelectionModel().getSelectedIndex() or listView.getSelectionModel().getSelectedItem() in the body of a ListChangeListener.

FREQUENCY : always