Let's define an OpenId Authentication mechanism to notifiy a logout from the application to the OpenID Provider such as:

@OpenIdAuthenticationMechanismDefinition(
           providerURI = "${openId.providerURI}",
           redirectURI = "${openId.redirectURI}",
           clientId = "${openId.clientId}",
           clientSecret = "${openId.clientSecret}",
           tokenAutoRefresh = true,
           logout = @LogoutDefinition(
              }}{{notifyProvider = true,
              redirectURI = "${openId.logoutRedirectURI}")
)
public class OpenIdDefinition {
    
}

When invoking HttpServletRequest.logout() the OpenId Authentication Mechanism sends a redirection to the following URI:

/<app>/org.jboss.resteasy.specimpl.ResteasyUriBuilderImpl@224ebc2a

It seems that the construction of such redirection is not valid or maybe some configuration might be missing. No error is thrown, it's just a matter of incorrect redirection to the OP.