title: Keycloak unable to synchronize with LDAP: Synchronization ignored as it's already in progress
body: <p>I am using Keycloak with LDAP integration. I was synchronizing users successfully from ActiveDirectory. Then at some point when synchronizing all users, I started getting the error: Synchronization ignored as it's already in progress (in fact it is part of the success message) and users are not synchronised. Just before starting to get this error, I played a bit with LDAP provider Edit mode (not sure it's related to the problem).I set it to WRITEABLE, then to UNSYNCED. I deleted one of the users that were previously imported from LDAP, then I switched back to READ_ONLY and tried to get back the deleted user but instead got the synchronization issue. Any idea why I am receiving this error?</p>