FULL PRODUCT VERSION :
java version 1.8.0_92
Java SE Runtime Environment, build 1.8.0_92-b14
Java Hotspot 64-Bit Server VM (build 25.92-b14, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows 10.0.10586

EXTRA RELEVANT SYSTEM CONFIGURATION :
nothing special, 8gb ram, quad-core

A DESCRIPTION OF THE PROBLEM :
Selecting the first three items in the order 0-2-1 of a list view in multiple selection mode fires add-events with the items 0-2-0 instead of 0-2-1 but the selection list itself contains the correct elements 0-2-1 - see example code.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
just start the attached sample. the programm selects the first three items in the order 0-2-1 and the listener prints the following items of the was-added event: 0-2-0 instead of 0-2-1. this happens even if the items are selected manually using the gui.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
items 0-2-1
ACTUAL -
items 0-2-0

ERROR MESSAGES/STACK TRACES THAT OCCUR :
none, just a wrong behaviour

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ListChangeListener;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.ListView;
import javafx.scene.control.SelectionMode;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
 
/**
 *
 * based on example from
 * http://docs.oracle.com/javafx/2/ui_controls/list-view.htm
 *
 */
public class ListViewSelection extends Application
implements ListChangeListener<String> {
     

    public static void main(String[] args) {
        launch(args);
    }
    
    
    @Override
    public void start(Stage primaryStage) {
        primaryStage.setTitle("ListView");
       
        System.err.println(System.getProperty("java.vendor")+" "+System.getProperty("java.version"));
        System.err.println(System.getProperty("os.name")+" "+System.getProperty("os.arch")+" "+System.getProperty("os.version"));
        
        ListView<String> listView = new ListView<>();
        listView.setPrefSize(200, 250);
        listView.setEditable(true);
        listView.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);
        
        ObservableList<String> items = FXCollections.observableArrayList();
        for( int i = 0; i < 600; i++ ) {
         items.add("v"+i);
        }
        listView.setItems(items);
        listView.getSelectionModel().getSelectedItems().addListener(this);
             
        StackPane root = new StackPane();
        root.getChildren().add(listView);
        primaryStage.setScene(new Scene(root, 200, 250));
        primaryStage.show();
        
        // select some items...
        // the result is the same when selecting via gui
        // but only on the _first_ three items
        
     listView.getSelectionModel().select(0);
     listView.getSelectionModel().select(2);
     listView.getSelectionModel().select(1);
    
     // result:
     //
     // v0
     // v2
     // v0
     //
     // expected result:
     //
     // v0
     // v2
     // v1 (???)
     //
    
    }

/**
* selection listener
*/
@Override
public void onChanged(ListChangeListener.Change<? extends String> r) {
while( r.next() ) {

assert !(r.wasAdded() && r.wasRemoved()); // happens in my application on further selections

if( r.wasAdded() ) {
for(int i = r.getFrom(); i < r.getTo(); i++) {

String e = r.getList().get(i);
System.out.println(e);
}
}
else {
System.out.println("unhandled event "+r);
}

} // while

// done
}

}

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

CUSTOMER SUBMITTED WORKAROUND :
Iterate the list of the selected items instead of using the index range of the wasAdded event - but that is a lot of work within an application.