@s0p4l1n www.sidefx.com is 206.223.178.168. Your log shows private IPs for the destination? What is the "Houdini" alias set to?
Basically the rule matches if the source, source port, dest, and dest port match. So one of those doesn't match. Note the source port is typically random.
Per that troubleshooting page, there may be stray packets blocked. "This is likely due to a TCP FIN packet arriving after firewall has removed the connection state. This happens because on occasion a packet will be lost, and the retransmits will be blocked because the firewall has already closed the connection. Another possible reason for the messages is if a packet arrived too slowly and was outside of its expected arrival window. It can also happen when web servers attempt to reuse connections.
In each case, the log entries are harmless and do not indicate a blocked connection. All stateful firewalls do this, though some do not generate log messages for this blocked traffic even if all blocked traffic is logged."
For that scenario, we uncheck the log setting "Log packets matched from the default block rules in the ruleset" which saves a lot of time and eliminates log noise.