That's possible. I've also had this happen with Wi-Fi captive portals; I assume redirecting all the port 22 traffic to port 22 on the router was an unintention

That's possible. I've also had this happen with Wi-Fi captive portals; I assume redirecting all the port 22 traffic to port 22 on the router was an unintentional side effect of redirecting all the port 80 traffic to port 80 on the router.