Issue with iptables 1.8.4 and RHEL 8.6

We have run into an issue after upgrading our systems from RHEL 8.5 to RHEl 8.6. Our machine is set up as a router between 2 sites. We have had to "loosen" the rp_filter ( change from 1 to 2) in the kernel parameters, as we need to provide asymmetric routing, and we also run iptables on this to restrict traffic.

This configuration has worked flawlessly, until we updated to RHEL 8.6.
What is strange, is I can always ping the device at the remote end, so ICMP traffic seems to be unaffected, however, when I try to SSH to the device, I see packets from the remote end, enter into our ingress interface, however I only see 1 packet exit the egress interface (i still see packets entering the ingress side). It appears that all other packets exiting are dropped (although I do not see anything in the logs to reflect them being dropped i.e. martians). I have flushed all iptables rules, and set everything to ACCEPT, but the issue still persists. I have found that if I completely stop the iptables service, the packets flow as they should and everything works.