Results 2 issues of Luis Toledo

Tasks list not displaying properly ![image](https://user-images.githubusercontent.com/46700/172919074-199aae03-7d57-4227-9ed0-3d61d267f645.png) Message ``` **Something went wrong** com/sun/javafx/scene/control/behavior/TextBinding com.sun.javafx.scene.control.behavior.TextBinding ``` Log ``` /home/luis/.ganttproject.d/logs/.ganttproject-20220608180114.log GanttProject 3.2.3240 Settings file: location: /home/luis/.ganttproject size:6218 is readable: true java.class.path: :/opt/ganttproject/eclipsito.jar:/opt/ganttproject java.home:...

Just noticed that `arSystem.stop()` does not dispose the overlays (scanning, loading...). Since those elements are attached directly to the body's node and not to the a-scene, they would not be...