Problems with package "sys-apps/systemd-utils" version 259.3

Greetings,

since recently I'm finding the following message in my Open-RC logs:

   sysctl: setting key "net.core.default_qdisc", ignoring: No such file
   or directory

This message occured for the first time  in the Open-RC boot log follow-
ing a routine upgrade of my packages  which in particular upgraded pack-
age "sys-apps/systemd-utils" from version 255.18 to version 259.3.   Af-
ter following several false tracks  in order to find the reason for this
message I eventually decided  to again downgrade package  "sys-apps/sys-
temd-utils"  to version 255.18.  Since then the above error message does
no longer show up in my Open-RC boot logs.

Both versions of package  "sys-apps/systemd-utils"  have been build with
USE flags

   USE: abi_x86_64 acl amd64 elibc_glibc kernel_linux kmod
        python_single_target_python3_13 tmpfiles udev

I'm currently running kernel  "sys-kernel/gentoo-sources-6.18.18"  but I
also tried both versions of package "sys-apps/systemd-utils"  on my pre-
vious kernel "sys-kernel/gentoo-sources-6.18.12" with identical results.

I've checked for open "systemd-utils" bugs at "https://bugs.gentoo.org/"
but did not find anything relevant.   And while this downgrade works for
the moment, I don't expect masking ">=sys-apps/systemd-utils-259.3" will
work for the rest of my life.

Anybody having an idea where else to look and for what, or should I just
file a bug?

Sincerely,
  Rainer