Google OAuth Authentication Issue with Realm Web SDK - Blank Page After Callback

After implementing Google OAuth authentication using Realm Web SDK, some users experience a blank page after completing the Google authentication flow. The callback URL contains authentication tokens but the page fails to process them properly.

here is URL looks like:

https://site.com/auth/callback#baas_client_app_id=APPID&_baas_state=icoqhrkxfdfbftb&_baas_ua=[long JWT token]

and my callback page code is

"use client";

import { useEffect } from "react";
import { useRouter } from "next/navigation";
import { handleAuthRedirect } from "realm-web";
import { useUser } from "@/app/context/UserContext";

export default function AuthCallback() {
  const router = useRouter();
  const { setUser } = useUser();

  useEffect(() => {
    const handleCallback = async () => {
      try {
        handleAuthRedirect();
      } catch (error) {
        console.error("Auth callback error:", error);
        router.push("/?error=auth_failed");
      }
    };

    handleCallback();
  }, [router, setUser]);

  return null;
}


Expected Behavior

  • After Google authentication completes, the user should be redirected to the application
  • The authentication tokens should be properly processed
  • The user’s session should be established

Actual Behavior

  • Some users see a blank page after Google authentication
  • The callback URL contains authentication tokens but they’re not being processed
  • No error messages are shown to the user

Attempted Solution

I’ve tried implementing a more robust callback handler:

Questions

  1. Is there a recommended way to handle Google OAuth callbacks with the Realm Web SDK?
  2. How can we ensure the authentication tokens are properly processed in the callback?
  3. Are there any known issues with the handleAuthRedirect function?
  4. What’s the best practice for handling race conditions during the OAuth callback process?

Any help or guidance would be greatly appreciated. Thank you!

This issue seems to occur specifically for mobile users.