代码链接https://developers.weixin.qq.com/s/HQcIIjmv7ChG

开发者工具gltf加载正常

真机预览模式下gltf加载失败

真机预览模式打开调试 gltf加载正常

相同问题：https://developers.weixin.qq.com/community/develop/doc/000082a0b880e84e7e5a5282050000?highline=webgl%E5%9C%A8%E5%AE%89%E5%8D%93%2Fios%E4%B8%ADgltf%E5%8A%A0%E8%BD%BD%E5%A4%B1%E8%B4%A5