[Maria-discuss] Drop user not replicating in 10.2.16/17 galera cluster with NO_AUTO_CREATE_USER in mysql_mode

Hi all, not sure if this is expected or not. I am running a test cluster in preparation for upgrading from 10.0 to 10.2 and noticed that DROP user commands were not being propagated to other members of the galera cluster. The only user management changes of note I know of was the addition of NO_AUTO_CREATE_USER to sql_mode and indeed removing that from sql_mode appears to have resolved it. My question is, is that expected behavior and if so whats the modern way of removing mysql users from a mariadb galera cluster. If not is it worthy of a bug report? Thanks, Vince