Description of problem:

When reboot or poweroff Fedora Server 29 (minimal install),
bash history some time is not saved.

Version-Release number of selected component (if applicable):

[root@s-addc ~]# rpm -q systemd bash
systemd-239-6.git9f3aed1.fc29.x86_64
bash-4.4.23-5.fc29.x86_64

How reproducible:

Start server, connect to it via ssh, then Reboot or poweroff via line command 

At the next login, some time the last bash commands are not saved into .bash_history

Steps to Reproduce:
1. connect to server via ssh
2. type some cmd
3. do reboot or poweroff
4. access to bash and verify if last command is saved.

Actual results:
Sometime last command are not save if reboot or shutdown the server.

Expected results:
Always last command must save when reboot or shutdown the server.

Additional info:

If I do exit the history is always saved

It seems (IMHO) that the shutdown process, started from reboot or poweroff, send a SIGKILL, or destroyed in some other mode, all active process, including the section of ssh which supports bash (sshd: root@pts/0), without give to it the time to save the history.
  
If someone have some suggest to investigate this random issue, let me know.

Thanks

Dario