Supabase UI - auth modal - signUp with gmail doesn't work properly - it throws no error when I register with existing email

[nicitaacom]

Bug report

• I confirm this is a bug with Supabase, not with my own application.
• I confirm I have searched the Docs, GitHub [Discussions]
  https://github.com/orgs/supabase/discussions/18380 - similar but there another issue

Describe the bug

A clear and concise description of what the bug is.

To Reproduce

https://github.com/nicitaacom/19_spotify-clone/tree/issue-supabase-signUp-with-gmail

1. Git clone https://github.com/nicitaacom/19_spotify-clone/tree/issue-supabase-signUp-with-gmail
2. Paste env

NEXT_PUBLIC_SUPABASE_URL='https://eqhntdpwtnhqzcnpxegh.supabase.co'
NEXT_PUBLIC_SUPABASE_ANON_KEY='eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJzdXBhYmFzZSIsInJlZiI6ImVxaG50ZHB3dG5ocXpjbnB4ZWdoIiwicm9sZSI6ImFub24iLCJpYXQiOjE2OTY2OTcwNjksImV4cCI6MjAxMjI3MzA2OX0.9DVxtenbS-JZixJOJUAhAeQYRlP2FdnmYV-Ymhi7y3Q'

3. pnpm i - pnpm dev
4. Click Sign up in top right corner
5. signUp with existing email address - icpcsenondaryemail@gmail.com
6. You got success message instead of error message

Expected behavior

I wait email with verification link
I got no email on my gmail

I wait error message
I got success message

On temp mail like mupsoyofya@gufum.com - it works fine

System information

    "@supabase/auth-helpers-nextjs": "^0.8.3",
    "@supabase/auth-helpers-react": "^0.4.2",
    "@supabase/auth-ui-react": "^0.4.6",
    "@supabase/auth-ui-shared": "^0.1.8",
     "next": "14.0.1-canary.2",

Additional context

Ask about additional context if needed

[nicitaacom]

user was registered - that's caused issue
But ok here is another issue - I was not notified about existing user
Whan I tried to signUp with existing email I got success message like - 'Check your email for the confirmation link'

Also why authModal so blured?