User is not informed of SAML single logout success
A user having a session on an IdP A and a SP B, when he logs out from B is logged out from A, but then he is redirected to B and B tries to redirect him to his IdP to open him a new session. B should inform him that he was successfully logged out instead. I noticed that behaviour with Redirect binding. I am not sure if it is a feature that has to be improved, or a (new ?) bug.