I am using Keycloak v26, which includes an "Organization" option that I have enabled. I want to create a custom login page that functions similarly to the default theme.

For example, if a realm has an anization, the login process should work as follows:

When accessing the application on port 4200, users are redirected to Keycloak. The login screen first displays only the username input field. After entering the username and clicking "Next" or "Sign In," the password field appears. If an Identity Provider (IDP) is configured, users should be able to log in directly via SSO without entering a password. I tried adding a custom theme, but initially, only the default Keycloak theme is displayed. My custom theme appears only on the next screen. Why is this happening?