[Bug]: Too many authentication attempts on logout

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

I logged out from my Nextcloud instance. It got back to the login page (index.php/login?clear=1), but, strangely, displayed a red message saying there were too many authentication attempts and to wait 30 seconds before trying again.

Although I had not recently tried to authenticate (I logged out), and moreover I have never failed to authenticate when I wanted to.

Steps to reproduce

1. Log out of Nextcloud.

Expected behavior

The login page should be displayed without a message about authentication attempts.

Nextcloud Server version

33

Operating system

Debian/Ubuntu

PHP engine version

None

Web server

None

Database engine version

None

Is this bug present after an update or on a fresh install?

None

Are you using the Nextcloud Server Encryption module?

None

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

List of activated Apps

Nextcloud Signing status

No errors have been found.

Nextcloud Logs

Additional info

No response

Start by reproducing the logout flow and inspect the index.php/login?clear=1 entry point reached afterward. Trace why logout produces the authentication-attempts warning; done when logging out returns to the login page without that message.