GPG agent forwarding

[paspo]

I need to access my gpg keychain from the remote session.
This is currently working in my setup with ssh, see the sample ssh config (some values are redacted):

host RemoteServer
        User RemoteUser
        Hostname 8.8.8.8
        Port 12345
        IdentityFile ~/.ssh/other/remoteserver
        ForwardAgent yes
        RemoteForward /run/user/1003/gnupg/S.gpg-agent /run/user/1000/gnupg/S.gpg-agent
        ExitOnForwardFailure yes

So when I connect via SSH, this is working:

ssh RemoteServer
~$ gpg --list-secret-keys

<redacted list of keys>

When I connect via open-remote-ssh, this is not working, even though the socket seems to be created correctly.
Sadly the socket is not working.

After searching old issues, I came to the conclusion that this has something to do with the internal implementation of ssh protocol, instead of relying on the host ssh binary.

Can I suggest the implementation of socket forwarding via something like the current port forwarding?