Sorry for replying on my own message ...
And once more...
*) HTCondor 23.3 suffers from the same problem, even with minimal config files (all default).
The problem occurs on Fedora 38/39 and Rocky 9, NOT on Rocky 8. Due to CGroup differences. B.
*) ssh_to_job works though.*) Reverting #75840 in Jira (from Oct 16th) "Merge pull request #1833 from htcondor/V23_1-HTCONDOR-2081-cgroup-v2-delegation-cleanup" solves the problem and seems to have no further consequences.Greetings, Ð. Fedora 39, kernel 6.6.9, condor-23.3.0-2.fc39.x86_64