Error on LDAP user federation - Test authentication on version v16.1.1

Hi,

System:
Windows/Linux
Java 8

Keycloak v15 is working ok but when I try the new version of Keycloak 16.1.1 I was not able to use LDAP user-federation (AD).
Authentication is not possible anymore and I am receiving the next error:

ERROR [org.keycloak.services.error.KeycloakErrorHandler] (default task-3) Uncaught server error: java.lang.NoSuchMethodError: java.nio.ByteBuffer.clear()Ljava/nio/ByteBuffer;
        at org.keycloak.vault.DefaultVaultRawSecret.close(DefaultVaultRawSecret.java:90)
        at org.keycloak.vault.DefaultVaultTranscriber.getCharSecret(DefaultVaultTranscriber.java:84)
        at org.keycloak.storage.ldap.idm.store.ldap.LDAPContextManager.getVaultSecret(LDAPContextManager.java:108)
        at org.keycloak.storage.ldap.idm.store.ldap.LDAPContextManager.createLdapContext(LDAPContextManager.java:72)
        at org.keycloak.storage.ldap.idm.store.ldap.LDAPContextManager.getLdapContext(LDAPContextManager.java:100)
        at org.keycloak.services.managers.LDAPServerCapabilitiesManager.testLDAP(LDAPServerCapabilitiesManager.java:99)
        at org.keycloak.services.resources.admin.RealmAdminResource.testLDAPConnection(RealmAdminResource.java:958)

Java 8 JRE or Java 11 JRE???: Server Installation and Configuration Guide
And here it is stated that java 11 is required: Keycloak - Getting started - OpenJDK

This is error is clearly a compatibility problem…

I had to temporary upgrade to OpenJDK11. Hope they resolve this problem.