FULL PRODUCT VERSION :
java version "1.8.0_112"
Java(TM) SE Runtime Environment (build 1.8.0_112-b15)
Java HotSpot(TM) 64-Bit Server VM (build 25.112-b15, mixed mode)

A DESCRIPTION OF THE PROBLEM :
when i used a tableview wrap in borderpane, and table data not fulled . tableview will do delete action when double click last column.
but i selected one row through click this row last cell, no matter where i double click the tableview ,will trigger delete action, have data rows exclude. at such times, i think most coder want to cleared selected rows, when user clicked tableview ,where the row have no data. if not, we will get error information ,from the function <tableView.getFocusModel().getFocusedCell()>

REGRESSION. Last worked in version 8u112

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :

Using the code I offered, i hope delete 1 row data ,when double click table last column .
but double click no data row ,also do delete action, after selected 1 row.
because the table selectionMode not cleared .when user click no data row, i think most coder want clear selected rows.

step:
1. click tablecell ,position = (0,2)
2. double click no data row, position = (5,1)

my english is bad, hope you know what i say.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
clear selectionMode. And not trigger delete action.
ACTUAL -
triggered delete action

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------

----------------------------------------DeleteTableExample class -------------------------------------------------------------
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.control.Alert.AlertType;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TablePosition;
import javafx.scene.control.TableView;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.input.MouseButton;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;

public class DeleteTableExample extends Application
{

    @Override
    public void start(Stage primaryStage) throws Exception
    {

        BorderPane borderPane = new BorderPane();

        TableView<Person> tableView = new TableView<>();
        tableView.setColumnResizePolicy(TableView.CONSTRAINED_RESIZE_POLICY);
        TableColumn<Person,String> tc1 = new TableColumn<Person,String>("name");
        tc1.setCellValueFactory(new PropertyValueFactory<Person, String>("name"));
        
        TableColumn<Person,String> tc2 = new TableColumn<Person, String>("address");
        tc2.setCellValueFactory(new PropertyValueFactory<Person, String>("address"));
        
        TableColumn<Person,String> tc3 = new TableColumn<Person, String>("delete");
        tableView.getColumns().addAll(tc1, tc2, tc3);

        tableView.getItems().addAll(new Person("name1", "address1"),
                new Person("name2", "address2"), new Person("name3", "address3"));
        
        tableView.setOnMouseClicked(event->{
            
            if(event.getButton()==MouseButton.PRIMARY&&event.getClickCount()==2)
            {
                TablePosition pos = tableView.getFocusModel().getFocusedCell();
                if(pos.getColumn()==2)
                {
                   new Alert(AlertType.CONFIRMATION, "will delete 1 row data. row number = " +pos.getRow()).showAndWait();
               //delete action
                }
            }
        });

        borderPane.setCenter(tableView);

        Scene scene = new Scene(borderPane);
        primaryStage.setScene(scene);
        primaryStage.setWidth(800);
        primaryStage.setHeight(600);
        primaryStage.show();

    }

    public static void main(String[] args)
    {
        Application.launch(args);
    }

}
-----------------------Person class ------------------------------
import javafx.beans.property.SimpleStringProperty;

public class Person
{
    private SimpleStringProperty name = new SimpleStringProperty();
    private SimpleStringProperty address = new SimpleStringProperty();

    public Person(String name, String address)
    {
        this.name.set(name);
        this.address.set(address);
    }

    public final SimpleStringProperty nameProperty()
    {
        return this.name;
    }

    public final String getName()
    {
        return this.nameProperty().get();
    }

    public final void setName(final String name)
    {
        this.nameProperty().set(name);
    }

    public final SimpleStringProperty addressProperty()
    {
        return this.address;
    }

    public final String getAddress()
    {
        return this.addressProperty().get();
    }

    public final void setAddress(final String address)
    {
        this.addressProperty().set(address);
    }

}

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

CUSTOMER SUBMITTED WORKAROUND :
TableCellBehaviorBase.class
protected void doSelect(final double x, final double y, final MouseButton button,
                          final int clickCount, final boolean shiftDown, final boolean shortcutDown){
.....
   if (tableCell.getIndex() >= count) return;
......
}
-----------------
i think before return , need add code
" this.getSelectionModel().clearSelection();"


SUPPORT :
YES