我注册了开放平台，下面有2个应用，有2个公众号分别授权给了这两个应用，但发现其中一个应用不返回unionid

都是普通的授权方式，并没有绑定到开放平台操作，那怎么有一个不返回unionid呢？

应用1，不返回unionid，（appid：wxe4a257c74a5960e0），对应的公众号：（wxb74969c9e4ac5f49）

URL:https://api.weixin.qq.com/cgi-bin/user/info?access_token=69_L8TZiFeV2F9w7wB19kvs6hfpP-b5nolBWyAztwMN57iZtC-o6dMJ5bp1deKizrwt-TFnG1ur0tF2xh3-XQJUvYbHIVDKk_aZPgUiLhFJxCOI7lIOSg3mPNoYuQdv7oig-_pSlqMQGB0fwps8FMAbAIDJQE&openid=oQJPo6WsJfyIjldgIXCLbQKJYTdk&lang=zh_CN

返回结果：{"subscribe":1,"openid":"oQJPo6WsJfyIjldgIXCLbQKJYTdk","nickname":"","sex":0,"language":"zh_CN","city":"","province":"","country":"","headimgurl":"","subscribe_time":1662740823,"remark":"","groupid":0,"tagid_list":[],"subscribe_scene":"ADD_SCENE_PROFILE_CARD","qr_scene":0,"qr_scene_str":""}

应用2，正常返回unionid（APPID：wxbe78893f3750c562），对应的公众号（wx695e3dbda0a147e2）

URL:https://api.weixin.qq.com/cgi-bin/user/info?access_token=69_8j8e8mBh44DiTxA7r8JY20oE46E02Ta_lYq2xuh1QSO5SgB0yx-iyN0jJMATgup1wskZhNWliNjng6Mj2Djuj9UGmq9nnvaWvJ0-RUGdyOymdUstR7pbG90kjDAEBW9OS6Wmk6OudDXxeSzyTCHiAHDENS&openid=oOdiSjtLqBreGsBw1ziKPTpIy_vg&lang=zh_CN

返回结果：{"subscribe":1,"openid":"oOdiSjtLqBreGsBw1ziKPTpIy_vg","nickname":"","sex":0,"language":"zh_CN","city":"","province":"","country":"","headimgurl":"","subscribe_time":1685540207,"unionid":"o46OK5sH1yfPAkK3b7yzrMqUABK4","remark":"","groupid":0,"tagid_list":[],"subscribe_scene":"ADD_SCENE_QR_CODE","qr_scene":0,"qr_scene_str":""}

请帮看一下应用1为什么没有返回unionid呢？