PostgreSQL not quitting on akonadictl stop?

Hi!

% akonadictl stop

wait… wait… wait… wait…

% ps aux  | grep "[p]ostgres"
martin   26084  0.0  0.1 213892 26660 ?        S    19:23   0:00 /usr/lib/postgresql/11/bin/postgres -D /home/martin/.local/share/akonadi/db_data -k/tmp/akonadi-martin.wTqoXj -h
martin   26088  0.0  0.0 213892  3948 ?        Ss   19:23   0:00 postgres: checkpointer   
martin   26089  0.0  0.0 213892  5816 ?        Ss   19:23   0:00 postgres: background writer   
martin   26090  0.2  0.0 213892  9108 ?        Ss   19:23   0:00 postgres: walwriter   
martin   26091  0.0  0.0 214300  6528 ?        Ss   19:23   0:00 postgres: autovacuum launcher   
martin   26092  0.0  0.0  68940  4872 ?        Ss   19:23   0:00 postgres: stats collector   
martin   26093  0.0  0.0 214292  6732 ?        Ss   19:23   0:00 postgres: logical replication launcher   

Anyone else seen this?

It goes away with a SIGTERM on "/usr/lib/postgresql/11/bin/postgres"
process.

Are these left over processes that PostgreSQL would reuse when being
started again by "akonadictl stop"? Or would I risk PostgreSQL running
*twice* when starting Akonadi again?

Thanks,
-- 
Martin