Two sync jobs running for the same realm

I have a realm in Keycloak with one user federation that is configured to sync changed users for every 60 seconds with an ldap. Today, I discovered the following in the Keycloak log:

07:16:45,175 INFO  [org.keycloak.storage.ldap.LDAPStorageProviderFactory] (Timer-2) Sync changed users from LDAP to local store: realm: app-dev, federation provider: ldap, last sync time: Fri Apr 03 07:14:45 UTC 2020
07:16:53,214 INFO  [org.keycloak.storage.ldap.LDAPStorageProviderFactory] (Timer-2) Sync changed users from LDAP to local store: realm: app-dev, federation provider: ldap, last sync time: Tue Mar 31 20:23:59 UTC 2020
07:17:45,171 INFO  [org.keycloak.storage.ldap.LDAPStorageProviderFactory] (Timer-2) Sync changed users from LDAP to local store: realm: app-dev, federation provider: ldap, last sync time: Fri Apr 03 07:16:45 UTC 2020
07:17:53,214 INFO  [org.keycloak.storage.ldap.LDAPStorageProviderFactory] (Timer-2) Sync changed users from LDAP to local store: realm: app-dev, federation provider: ldap, last sync time: Tue Mar 31 20:23:59 UTC 2020

It seems like there a two sync jobs running every minute. One has the correct ‘last sync time’, one seems to be “stuck” at March 31. I have since restarted keycloak as well as disabled/enabled the sync job, but the problem persists. How to I get rid of the second sync job?