How to configure CAS integration after migration to Vaadin 24?

Hi,

I’m trying to migrate my app with Vaadin 23, Spring Boot 2.7 and CAS (Apereo) integration to the new Vaadin version 24, Spring Boot 3. My problem is how to configure a CAS integration. Now, it looks like the CAS login page is showing in iframe from index.html - it’s not redirected to CAS login page. On previously version of Vaadin there is no problem. In my POM I’ve added:

<spring-security.version>6.1.0-M2</spring-security.version>

I can’t find any new examples of usage a CAS integration for the new Vaadin version. In attachment is my working code before migration.

Regards