Why systemd running in rootless container fails to stop services like postgresql on Red Hat Enterprise Linux 8 ?

Issue

• Why systemd running in rootless container fails to stop services like postgresql on Red Hat Enterprise Linux 8 ?
  *For postgresql service, command systemctl stop postgresql hangs. Require CTRL-C and systemctl daemon-rexec to clear the deactivating state

[root@3fa42913d76b /]# systemctl stop postgresql
^C

[root@3fa42913d76b /]# systemctl status postgresql
● postgresql.service - PostgreSQL database server
   Loaded: loaded (/usr/lib/systemd/system/postgresql.service; disabled; vendor preset: disabled)
   Active: deactivating (final-sigkill) since Fri 2020-11-27 10:45:55 UTC; 2min 18s ago
  Process: 140 ExecStart=/usr/bin/postmaster -D ${PGDATA} (code=exited, status=0/SUCCESS)
  Process: 138 ExecStartPre=/usr/libexec/postgresql-check-db-dir postgresql (code=exited, status=0/SUCCESS)
 Main PID: 140 (code=exited, status=0/SUCCESS)
   CGroup: /user.slice/user-1001.slice/user@1001.service/user.slice/podman-14685.scope/3fa42913d76bc5347cebf975023f043f705dc89f6f0d3361129a967c87256b56/system.slice/postgresql.service