Firebase provider sign-in is not working inside facebook/messenger/instagram in-app browser webview. Error 403: disallowed_useragent
问题 my team uses firebase auth and we recently run into major problems. We started advertising our website on facebook. Unfortunately, facebook app opens all the links in the in-app webview. Google blocked support for signing in with provider through embedded browser, so none of the users that opens our webapp through facebook/messenger/instagram apps can sign in. Google/Facebook sign-in returns 403: disallowed_usegagent and it is impossible to sign up. Is there any workaround? Has anyone