A simple TreeTableView containing CheckBoxTreeItems, a few non-leaf nodes, each containing a few
leafs. When quickly and repeatadly expanding and collapsing a disclosure node of last non-leaf node,
after a while (usually 40-50 clicks), the other disclosure nodes start dissapearing and reappearing
again. It seems to be a rendering bug.

I haven't managed to pinpoint a specific behaviour that causes the issue, it seems a bit random. Selecting
other checkboxes between the clicks sometimes triggers the rendering bug a bit faster.

The simple code causing the issue is below. I am running JDK 1.8.0_40 (64-bit, Linux, KDE 4.14.6).

import javafx.application.Application;
import javafx.beans.property.BooleanProperty;
import javafx.beans.property.SimpleBooleanProperty;
import javafx.scene.Scene;
import javafx.scene.control.CheckBoxTreeItem;
import javafx.scene.control.TreeTableColumn;
import javafx.scene.control.TreeTableView;
import javafx.scene.control.cell.CheckBoxTreeTableCell;
import javafx.stage.Stage;

public final class DisclosureNodeTest extends Application {

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

@Override
public final void start(final Stage stage) throws Exception {
final Model rootModel = new Model();
final CheckBoxTreeItem<Model> root = new CheckBoxTreeItem<>(rootModel);
root.selectedProperty().bindBidirectional(rootModel.selectedProperty());

for(int i = 0; i < 10; ++i) {
final Model parentModel = new Model();
final CheckBoxTreeItem<Model> parentCheckBox = new CheckBoxTreeItem<>(parentModel);
parentCheckBox.selectedProperty().bindBidirectional(parentModel.selectedProperty());

for(int j = 0; j < 5; ++j) {
final Model childModel = new Model();
final CheckBoxTreeItem<Model> childCheckBox = new CheckBoxTreeItem<>(childModel);
childCheckBox.selectedProperty().bindBidirectional(childModel.selectedProperty());
parentCheckBox.getChildren().add(childCheckBox);
}
root.getChildren().add(parentCheckBox);
}

final TreeTableColumn<Model, Boolean> selectedColumn =
new TreeTableColumn<>("Selected");
selectedColumn.setPrefWidth(200);
selectedColumn.setEditable(true);
selectedColumn.setCellValueFactory(p -> p.getValue().getValue().selectedProperty());
selectedColumn.setCellFactory(tc -> new CheckBoxTreeTableCell<>());

final TreeTableView<Model> table = new TreeTableView<>(root);
table.setShowRoot(false);
table.setEditable(true);
table.getColumns().add(selectedColumn);

final Scene scene = new Scene(table, 500, 350);
stage.setScene(scene);
        stage.show();
}

private final class Model {
private final BooleanProperty selected;

public Model() {
this.selected = new SimpleBooleanProperty(false);
}

public final BooleanProperty selectedProperty() {
return selected;
}
}
}