[kakao login] Issue when using Supabase Kakao login oauth using Flutter on IOS

[merche-o]

Steps to reproduce

I'm implementing Kakao login in my app using Supabase and Flutter. Here’s my implementation, which I followed based on the Supabase documentation:

await _client.auth.signInWithOAuth(
  OAuthProvider.kakao,
  redirectTo: redirectUrl,
  authScreenLaunchMode: LaunchMode.inAppWebView,
);

The redirectUrl is a deep link that should redirect back to my app.

Expected results

The Kakao login should run smoothly and automatically redirect users to the app’s home page after successful authentication.

Actual results

When using an in-app browser (which is required by Apple’s guidelines), I encounter a blank webview and the following error in my logs:

PlatformException(Error, Error while launching https://ldtimmwvdiqiuprrgset.supabase.co/auth/v1/authorize?provider=kakao&redirect_to=com.nectrlimited.scout%3A%2F%2Fkakaologin&flow_type=pkce&code_challenge=APN0TMO63GO3jY8a0YD0jCHkuvDd6fwn51WHaMeGFes&code_challenge_method=s256, null, null)

To proceed with login, you must manually dismiss the blank webpage using the Done button.

(FYI i don't have any issue when using external browser)

Code sample

kakao oauth

`  await _client.auth.signInWithOAuth(
        OAuthProvider.kakao,
        redirectTo: redirectUrl,
        authScreenLaunchMode: LaunchMode.inAppWebView,
      );