new snap is building now that has those commits in it, so it should be OK once it uploads later this evening.
This issue creeped up on me Monday's daily build. Decided to come post about it today. Been trying new dailies all week waiting for a fix. Each time after a rule change, manually editing out the empty or erred rules in /tmp/rules.debug
and reloading the rules from the shell.
pfctl -f /tmp/rules.debug