PointerDragBehavior not trigger in UtilityRenderlayer

In this simple example if you comment this line :
pointerDragBehavior will works.

But if the mesh is added to utilityLayer pointerDragBehavior will be not trigger.
And I don’t find a function to add the pointerDragBehavior to utilityLayer, something like utilityLayerScene.addBehavior

Seems to work correctly when the sphere is created with the scene paremeter set to the utility layer’s scene.


This works well even when importing SceneLoader meshes, so avoid using utilityrenderscene.addmesh(), and import directly into the utility render scene.
I thought addMesh() changed the mesh scene.
But it seems that by using addMesh() the mesh is present in both scenes.

Thanks for your help.