只能暂时这么解决
/**
* 辅助3D添加对象
* @param owner
* @param child
*/
static addChildHelper(owner: Laya.Node, child: Laya.Sprite3D) {
let position = child.transform.position.clone()
let rotation = child.transform.rotation.clone()
let scale = child.transform.getWorldLossyScale().clone()
owner.addChild(child)
child.transform.position = position
child.transform.rotation = rotation
child.transform.setWorldLossyScale(scale)
}