This is weird, I just tested here on my RPi4 (with memory limited to 1GB) and after stopping kodi with "systemctl stop kodi" I'm seeing the SUMMARY line in the status output (the exit code / status 23 is normal, that's reported when there was leaked memory).
Can you please post your full journal after stopping kodi?
run "journalctl -b | pastebinit"
so long,
Hias