Upgraded from 19.1 to 19.7.2, no issues.
Gateways encountered an issue, as per this thread - https://github.com/opnsense/core/issues/3625. Applied the patches. That got them appearing again in admin, however, IPV4 one is always disabled and hitting enable doesn't work.
dpinger service either doesn't appear in the list, or just refuses to start :/ Can't seem to find any config file or logs for it.