-- Installing pf.conf and enabling PF...
Enabling pf.

-- About to ping localhost, this should work...
PING localhost (127.0.0.1): 56 data bytes
64 bytes from 127.0.0.1: icmp_seq=0 ttl=64 time=0.048 ms
64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.180 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.082 ms
64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=0.181 ms

--- localhost ping statistics ---
4 packets transmitted, 4 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 0.048/0.123/0.181/0.059 ms

-- Reloading PF rules...

-- About to ping localhost, this fails if bug is reproduced...
PING localhost (127.0.0.1): 56 data bytes
ping: sendto: Permission denied
ping: sendto: Permission denied
ping: sendto: Permission denied
ping: sendto: Permission denied

--- localhost ping statistics ---
4 packets transmitted, 0 packets received, 100.0% packet loss

-- Reloading PF rules...

-- About to reload rules with 'set skip on lo0': this may segfault on FreeBSD 12...

-- Reloading PF rules...
Segmentation fault (core dumped)

-- Done.