[Samba] winbind behavior question

[d tbsky]

Hi:

   I have one samba 4.7/4.8 DC, one samba member file server (rhel 7.5
with samba 4.7.1), and one windows 7 member PC.

   if I create an account (my-account) in samba DC, I can not see it
in the member server with "id my-account" or "getent passwd
my-account".

   but if I use windows member PC to access the file server with
my-account, then immediately "id my-account" and "getent passwd
my-account" will work in member server.

   is this behavior expected? can I let samba member server get the
newly created account immediately?

  thanks a lot for help.