There are two wrong behaviors observed with ContextMenu added to the three controls ComboBox, DatePicker & ColorPicker.
1. Popup is displayed on mouse right button click.
2. ContextMenu does not hide when the control is removed from scene.

Steps:
1. Execute the attached program.
2. Right click on any control to show the related ContextMenu.
=> Observe that both context menu & popup are displayed.

3. Click on the popup.
4. onAction listener is called and the listener remove that control from scene.
=> Observe that the ContextMenu is still shown.

Expected behavior:
1. Popup should be displayed only on left mouse click.
2. ContextMenu should hide when the control is removed from scene.