Attaching a light probe to a geometry throws exception and cant be removed from node.

[mitm001]

Attaching a light probe to the geometry will throw this exception.

SEVERE [com.jme3.gde.core.scene.SceneApplication]: Scene graph is not properly updated for rendering.
State was changed after rootNode.updateGeometricState() call.
Make sure you do not modify the scene from another thread!
Problem spatial name: PBRCube
java.lang.IllegalStateException: Scene graph is not properly updated for rendering.
State was changed after rootNode.updateGeometricState() call.
Make sure you do not modify the scene from another thread!

Understandable, but the attached lightprobe cannot be removed without restarting the SDK after delete.

[grizeldi]

Reproduced. This leaves SceneComposer completely unusable for any file (not just the one where the mistake was made) until the sdk is restarted.