OIDC : For Delete User API, keycloak is not sending backchannel logout to all clients to invalidate the session

User is logged in via 2 clients
Expectations is when user is deleted in keycloak, logout notification has to go to clients to terminate the sessions
But, current keycloak is not sending any backchannel logout to the clients?

Can anyone help me on this? Is there any known issue on keycloak for this?