gnus-dbus-close-on-sleep does not close servers

Hey,

I'm using `gnus-dbus-close-on-sleep'. However when I suspend the
connections are not closed.
When resuming the connection are set down, meaning I get 'Server
nnimap+server previously determined to be down; not retrying'.

How could I debug this issue further, did anyone else try to use the
option?
Any pointers what could be wrong?

Have a nice day,

Björn

My system
GNU Emacs 31.0.50 (build 1, x86_64-suse-linux-gnu, GTK+ Version
3.24.43, cairo version 1.18.2)
Windowing system distributor 'The X.Org Foundation', version 11.0.12101012
System Description: openSUSE Tumbleweed
DBus-Broker 36
Systemd 256