Add simple test case for the "scene not updated" crash in the SDK

jme3-examples/src/main/java/jme3test/scene/TestRefreshFlagBug.java

@@ -0,0 +1,45 @@
+package jme3test.scene;
+
+import com.jme3.app.SimpleApplication;
+import com.jme3.material.Material;
+import com.jme3.scene.Geometry;
+import com.jme3.scene.Node;
+import com.jme3.scene.shape.Box;
+
+public class TestRefreshFlagBug extends SimpleApplication {
+
+    private float time = 0;
+    private boolean attached = false;
+    private Node inBetweenNode;
+    
+    public static void main(String[] args) {
+        TestRefreshFlagBug app = new TestRefreshFlagBug();
+        app.start();
+    }
+    
+    @Override
+    public void simpleUpdate(float tpf) {
+        time += tpf;
+        if (time > 5 && !attached) {
+            attached = true;
+            
+            Box b = new Box(1, 1, 1);
+            Geometry geom = new Geometry("Box", b);
+            Material mat = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
+            geom.setMaterial(mat);
+            
+            inBetweenNode.attachChild(geom);
+            
+            // the refresh flags become corrupted here ...
+            inBetweenNode.getWorldBound();
+        }
+    }
+    
+    @Override
+    public void simpleInitApp() {
+        inBetweenNode = new Node("In Between Node");
+        rootNode.attachChild(inBetweenNode);
+            
+        flyCam.setDragToRotate(true);
+    }
+}