Hey @adziadek,
This is the expected behavior for SSO. Native apps leverage a shared browser session to avoid prompting the user for credentials across multiple applications.
To force the logout behavior you’re referring to, you can use the /logout endpoint of your Okta organization. This will terminate the Okta session in the browser - forcing all users to login again when their tokens expire (or when there is a new request to the /authorize endpoint).
Hope this helps!