What I'm running into is I have a webserver behind a NGINX proxy within my network and If I'm on my WireGuard VPN it'll redirect me to the GL.iNet Admin page instead of forwarding the traffic to my internal NGINX server.
Being on LAN it works fine, and on WAN it works fine.
What I suspect is the traffic isn't being allowed to go from Outside > Inside if it's destined from the WG interface, or is hitting a blanket rule somewhere.
I verified it not being an issue on Vanilla OpenWRT, but can't deal with the performance of the open-source wireless drivers.
May I know how about if access it using the LAN IP?
Since you already running the VPN, why using the domain_name (public DNS name) instead of the LAN IP?