Seeing quite a few "Packet rejected remote IP" messages in logs

Remote IP is pool member and local IP is SNAT pool member. Full message: Packet rejected remote IP x.x.x.x port x local IP y.y.y.y port y proto TCP: Port closed. I have a pretty busy VIP and am using OneConnect. Am using TCP-LAN-Optimized profile with 60 second idle time. All traffic for this VIP is HTTP. When doing a packet capture, it doesn't appear that there's any idle time before I reject the packet. I'm also using ASM here...not sure if that matters.. Yes - I've created a support ticket, just thought I'd see if anyone here has experienced anything similar.