I am running CentOS Stream 9. I just upgraded to systemd-252-26.el9. After doing so I am seeing messages like these in my logs:
sshd: pam_unix(sshd:session): session opened for user jik(uid=3009) by jik(uid=0)
Note that it says "jik(uid=0)" at the end of the message. Prior to this upgrade there was no username before the "(uid=0)". That was preferable to the wrong username. It should obviously say "root(uid=0)" rather than "jik(uid=0)".