With migration of kstest-runner container from F38 base to F39 (resolution of https://github.com/rhinstaller/kickstart-tests/issues/1129) the kickstart test run with

sudo containers/runner/launch keyboard

it is not possible to connect with

virt-viewer -c qemu+tcp://<IP>/session

as documented in https://github.com/rhinstaller/kickstart-tests/tree/master/containers/runner