Help with WireGuard VPN - no KILL Switch needed

[gspannu]

I have setup my WireGuard VPN to an external provider by following the WireGuard Selective Routing to External VPN Endpoint guide. All firewall rules, etc, setup as per the guide.

I have 4 clients (on 2 different VLANs) that use this VPN connection for their traffic.

Everything works as expected - No issues.


Question:
Contrary to most people, what I would like is that if this VPN connection drops/ disconnects, I would like to have these 4 clients use the normal (default) WAN Gateway - so that internet services are not impacted.

i.e. the opposite of Kill Switch

What settings or firewall rules do I need to add to accomplish this?  Layman/ newbie explanation please...

What I have already tried?
Enabling/ disabling the gateway Monitoring Skip Rules check-box seems to have no effect.

[Bob.Dig]

As far as I know it is the default behavior for policy based routing.

[gspannu]

That is what my guess was as well… but as soon as the VPN Gateway drops, the 4 clients lose their connection to the internet.

I will post my firewall settings shortly, maybe there is an issue there.