Not exactly sure when it got broken but here is the version where it still works as expected compared to the latest one:

$ sudo -V
Sudo version 1.8.3p2
Sudoers policy plugin version 1.8.3p2
Sudoers file grammar version 40
Sudoers I/O plugin version 1.8.3p2
$ sudo su -
[root@xxxxx:/home/root:] who am i
mhulka      pts/2       Jan  2 12:25     (xxx.xxx.xxx.xxx) 
[root@xxxxx:/home/root:] 


$ sudo -V
Sudo version 1.8.26
Sudoers policy plugin version 1.8.26
Sudoers file grammar version 46
Sudoers I/O plugin version 1.8.26
$ sudo su -
Password: 
[root@xxxxx:/home/root:] who am i
root      pts/2 
[root@xxxxx:/home/root:]


respective configuration part from /etc/sudoers:
Defaults log_output
Defaults!/usr/bin/sudoreplay !log_output
Defaults!/etc/reboot !log_output
Defaults!/usr/sbin/reboot !log_output
Defaults!/etc/shutdown !log_output
Defaults!/usr/sbin/shutdown !log_output


if I remove this part from /etc/sudoers everything works as expected however we do not have data for sudoreplay which we would like to have.