Routed IPv6 Port Forward doesnt arrive on target interface

[iTimo01]

Im currently forwarding a couple of ports on a gateway in front of the OPNSense.

The OPNSense is supposed to just route the packets.

When trying to forward a port via IPv6 and running a packet capture, i can see the traffic arrive on the source interface (WAN2) with a DNAT, but it never shows up on the target (LAN) interface.

If i cheat and use SNAT on the external GW aswell then it arrives perfectly fine at the target.

Setup:
Public IPv6 WAN2: 2001:8d8:XXX
Private IPv6 WAN2: FC00::BBA:1

OPNSense IPv6 WAN2: FC00::BBA:2
OPNSense IPv6 LAN: FC00::AAB:1
Target IPv6: FC00::AAB:F0

FW Rule (Interface WAN2) is attached as a screenshot


Update: forgot to mention WAN2 is a Wireguard Link

[iTimo01]

I just checked and it actually appears in the live log with the correct interface, but a Packet capture still doesn't see it.