@the_alexis @guus thank you for letting me know. The built .deb package was built incorrectly.
I added more details here Jira
Meanwhile as a workaround you can execute: sudo systemctl daemon-reload; sudo systemctl enable openfire; sudo systemctl restart openfire.
This is a CI problem that should be fixed ASAP. For details see OF-2526 .github/continuous-integration-workflow.yml upgrade Ubuntu pacakges by stokito · Pull Request #2875 · igniterealtime/Openfire · GitHub