ADDITIONAL SYSTEM INFORMATION :
Java 11 and JavaFX built from source. JavaFX is integrated with the JDK. This bug can be reproduced with the standalone SDK, however.

A DESCRIPTION OF THE PROBLEM :
Setting Tableview's setMouseTransparent method does not make the window transparent in the current version of JavaFX.

REGRESSION : Last worked in version 10

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Using JavaFX 11, Create any TableView and set setMouseTransparent to true.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Mouse transparency(mouse ignores the window and instead acts as if the window doesn't exist).
ACTUAL -
No mouse transparency.

---------- BEGIN SOURCE ----------
Unable to provide due to Netbeans being unable to locate main class in a modular project(for some reason) and refusing to compile in a non modular environment because of JavaFX Deployment not being included in the JDK. However, here is the code that I am using:

public class OSDStage extends Stage
{
    public static boolean OSD_ENABLED = false;
    
    
    private final Scene scene;
    
    public OSDStage()
    {
        super();
        super.setTitle("Goliath Overclocking Utility OSD");
        super.setResizable(false);
        super.setX(0);
        super.setY(0);
        super.initStyle(StageStyle.TRANSPARENT);
        super.setAlwaysOnTop(true);
        
        scene = new Scene(new OsdTable());
        scene.setFill(Color.TRANSPARENT);
        
        
        OSD_ENABLED = true;
        
        super.setScene(scene);
        super.show();
    }
    
    @Override
    public void close()
    {
        OSD_ENABLED = false;
        super.close();
    }
    
    private class OsdTable extends TableView<NvAttribute>
    {
        private final TableColumn<NvAttribute, String> colOne, colTwo;
        
        public OsdTable()
        {
            super();
            super.setPrefWidth(352);
            super.setColumnResizePolicy(TableView.UNCONSTRAINED_RESIZE_POLICY);
            super.setEditable(false);
            super.setMouseTransparent(true);
            super.setTableMenuButtonVisible(false);
            super.getStylesheets().add("goliathoufx/css/osd.css");
            super.setItems(FXCollections.observableArrayList(InstanceProvider.getOSDAttributes()));
            
            colOne = new TableColumn<>();
            colOne.setMinWidth(200);
            colOne.setMaxWidth(200);
            colOne.setStyle("-fx-text-fill: #00FF00;");
            colOne.setCellValueFactory(new PropertyValueFactory<>("displayName"));
        
            colTwo = new TableColumn<>();
            colTwo.setMinWidth(150);
            colTwo.setMaxWidth(150);
            colTwo.setStyle("-fx-text-fill: #00FF00;");
            colTwo.setCellValueFactory(new PropertyValueFactory<>("displayValue"));
            
            super.getColumns().add(colOne);
            super.getColumns().add(colTwo);
        }
    }
}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Use Oracle JDK 9 or 10.

FREQUENCY : always