DNAT rule only works for http

Hi

I finally setup my sophos XG 106

I have a WAN/LAN/DMZ and WiFi Zone. 

WAN use PPPoe Passthrough

In the DMZ zone I'm currently running an docker host with some container.

I created a DNAT rule to access one of the container running on Port 8181 from outside. 

After hours of recreating and troubleshooting I decided to add HTTP also to the same NAT and Firewall Rule.

I tested it and I get instant access to the container that expose the 80 port, but this is not what I want.

the container on port 8181 is still not accessable. 

I can see the success message for Port 80 in the Log viewer but no entry for the 8181 port.

i also tried it with port 55555 but it seams that only port 80 (and 443) is working.

What did I miss?
Thanks for helping