Restore unwrapped Bullet triangle shape shallow copying

components/resource/bulletshape.cpp

@@ -39,6 +39,13 @@ namespace Resource
                     const_cast<btBvhTriangleMeshShape*>(trishape->getChildShape()), trishape->getLocalScaling()));
             }
 
+            if (shape->getShapeType() == TRIANGLE_MESH_SHAPE_PROXYTYPE)
+            {
+                const btBvhTriangleMeshShape* trishape = static_cast<const btBvhTriangleMeshShape*>(shape);
+                return CollisionShapePtr(new btScaledBvhTriangleMeshShape(
+                    const_cast<btBvhTriangleMeshShape*>(trishape), btVector3(1.f, 1.f, 1.f)));
+            }
+
             if (shape->getShapeType() == BOX_SHAPE_PROXYTYPE)
             {
                 const btBoxShape* boxshape = static_cast<const btBoxShape*>(shape);