[Bug]: Redirect after second google login to home page not working

[Denguido]

OAuth2-Proxy Version

v7.6.0

Provider

google

Expected Behaviour

If the first attempt fails to login due to a non autorized google email address (because it's not listed in the authenticated-emails-file) you get a 403 message. If you then click on the sign in button again and login with an authorized google email address you should be redirected to the home page of the requested url.

Current Behaviour

If the first attempt fails to login due to a non autorized google email address (because it's not listed in the authenticated-emails-file) you get a 403 message.

If you then click on the sign in button again and login with an authorized google email address you should be redirected to the home page of the requested url but instead you get a 403 message again. (Although the _oauth2_proxy cookie is set)

Steps To Reproduce

Running on Ubuntu 20.04 with nginx 1.18.0

Oauth2-Proxy config:

ExecStart=/opt/oauth2_proxy/oauth2_proxy \
  --authenticated-emails-file=/xxx/xxxx/users \
  --client-id=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.apps.googleusercontent.com \
  --client-secret=xxxxxxxxxxxxxxxxxxxxxxxxxx \
  --cookie-secret=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx \
  --cookie-domain=.my-domain.com \
  --cookie-expire=168h \
  --cookie-secure=true \
  --cookie-httponly=true \
  --cookie-csrf-per-request=true \
  --set-xauthrequest=true \
  --pass-user-headers=true \
  --custom-sign-in-logo=/var/www/my-domain.com/my-logo.png \
  --footer=-

Nginx config:

    location / {
      auth_request /oauth2/auth;
      error_page 401 = /oauth2/sign_in;
      # pass information via X-User and X-Email headers to backend
      # requires running with --set-xauthrequest flag 
      auth_request_set $user $upstream_http_x_auth_request_user;
      auth_request_set $email $upstream_http_x_auth_request_email;
      proxy_set_header X-User $user;
      proxy_set_header X-Email $email;
      proxy_set_header Host $host;
      proxy_set_header X-Real-IP $remote_addr;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; 			
      proxy_pass_header Server;
      proxy_connect_timeout 3s;
      proxy_read_timeout 10s;

      # if you enabled --cookie-refresh, this is needed for it to work with auth_request
      auth_request_set $auth_cookie $upstream_http_set_cookie; 				
      add_header Set-Cookie $auth_cookie;
      # proxy_pass http://127.0.0.1:8080;
    } 

Possible Solutions

No response

Configuration details or additional information

No response