Keycloak SAML IDP integration Logout issue

[Dwaipayan Bhattacharya]

I am using Keycloak as service provider and done the SAML based integration with the external IdP.
The login functionality works fine: For login the Idp login screen comes up. On successful login it gets redirected to the keycloak as expected.
Logout issue: But whenever I do a successful logout from the application it gets logout from the idp , but session is maintained in the keycloak side. Logout doesn't happen from keycloak. 

Is there any setting that I need to enable in the keycloak side so that the logout happens from keycloak too along with the external IdP.

attached screenshots.

Thanks in Advance,

 Dwaipayan

[Edmilson Santana]

Did you try to enable the backchannel logout?

[Björn Pedersen]

If the external provider is configured to logout (the external provider is making a call to the logout endpoint), then you need to configure the external provider to not do it. Or you need to work with offline tokens.

 

Thanks in Advance,

 Dwaipayan

[Aurunisbi Aldino Aulia]

Hi, Have you resolved this issue ? cause im facing the same. I even can't logout both session. 
could u please give me the points?