BxMS 6.3 does not store milliseconds when using MariaDB for log tables (e.g. NodeInstanceLog - log_date column). Looking in DDLs I see that tables are created as follows:

create table NodeInstanceLog (
id bigint not null auto_increment,
connection varchar(255),
log_date datetime,
...

According to [1], datetime will not store milliseconds. I have modified it as follows:

log_date datetime (6)

However, the value is not store properly. The milliseconds is stored properly and work well if using PostgreSQL for instance.

[1] https://mariadb.com/kb/en/mariadb/datetime/