[keycloak-user] Restricting users by realm

[valsaraj pv]

Hi,

I have a set of users & 2 realms for 2 different applications.
One is my application and other is test vanilla application. These two are
using separate realms under single Keycloak server.
When a user logged in to my application & when I click login button of
vanilla application, it shows that user as logged in.
Is this existing scenario in Keyclock? Since user is logged in with
different realm, how that user shown as logged in in vanilla app?
Is there any way to prevent this?

Thanks,
Valsaraj Viswanathan